Rating: 
Summary: Works fine - but not from Amazon
Review: I have two of these, one in a Canon Powershot S500 and the other in a Powershot S1 IS and both work fine. No problems at all.The ordering issue was something else, eventually I gave up on Amazon's extended and extending delivery times and bought them on Ebay for $10 more. I buy a lot of gear from Amazon and I was disappointed this time, but that's one in a hundred where they have totally failed my expectations, not bad overall. It's a fast memory card, it works, it's available on Ebay. What else is there to say?
Rating:
Summary: Good price; fast write speed; no trouble
Review: I haven't had this card long, but I've been very pleased with its performance. I have a Canon S10 IS. This particular camera takes very good movie clips--approaching that of DVD. This card keeps up with all that information as the movie clip is being taken, and finishes up very quickly when you stop recording. It, of course, performs well taking pictures, too. The short story is: I've been pleased with the Ultra II and like to think it's worth the extra money.
Rating: 
Summary: Still waiting
Review: I ordered this card on 'april/15' and today 'may/7', i got an email that the item will be shiped on 'july/17' ( in 2 months)...that rally ruined my planned vacation...
I expected more from amazon..
Rating:
Summary: ordered on april 21 -- delivery estimate in june
Review: i placed this order a long time ago on april 21st, and i have yet to recieve it. the description said it usually shipped in about a week, then they changed it to a later date, then they changed in again. Now the description says the item is not in stock. This is too bad because i ordered my Canon Digital Rebel on april 20, and UPS came to deliver it today. Now i won't be able to take pictures until i get this card, and who knows when that will be.. hopefully this card will work well for me, and even though i am complaining about the poor service now, i will rate the "true" product when i recieve it... whenever that is. I have ordered from amazon in the past and this is my only negative experience so far.
Rating:
Summary: Got mine from Amazon. 60X write, 66X read.
Review: I pre-ordered this item from Amazon. Apparently, there was an initial delay with Amazon's supply, but I just got mine. With a price like this and free shipping (which, despite being "Super Saver," was speedy as usual), I have no complaints. Works fine so far, and the capacity boost over my old 64MB card has me almost giddy: The "pictures remaining" counter on my 3MP camera jumped from about 40 to over 300. Helpful info: The manufacturer's "X" speed rating equivalent, which isn't easy to find online, is 60X write and 66X read.
Rating:
Summary: I agree, great card!
Review: I purchased this card for my new Garmin Street Pilot 2610 GPS unit. I wanted to simultaneously load the map/address/routing information for the entire western half of the United States into the Street Pilot. This was almost 400MB of data and it took only about 60% of the time to load for this SanDisk card as it had done with another brand of card. The speed difference really shows and I recognize now that this speed and quality is worth the extra ten or fifteen dollars! If you have a mega-pixel digital camera this is the card for you, too.
Rating: 
Summary: Your reader may not work with this card!
Review: I purchased this card for use with my Canon Digital Rebel. I had been told by other digital SLR users that they did not notice an increase in performance with the high speed cards and I now must agree with them. This Ultra II card does not work any faster and does not impact my camera performance under normal picture taking because my camera buffers images. The only time that I can foresee an advantage would be during rapid picture taking, but how often does the average photographer do that?
The BIG DISADVANTAGE is if you want to use this card with your existing card reader. I tried using the Ultra II card with my card reader and ran into trouble when I tried to read or to write to the card. The computer either reported I/O errors or the process took a minute per image. Not exactly the blazing speeds which were promised. I contacted Sandisk about the problem and they told me that Ultra II cards will not work with older readers including older Sandisk readers. If you want to use this card, you need a new reader. This is a big disadvantage for someone like myself who travels a lot and counts on using internet cafes to transfer images to CD's to clean space on the compactflash cards while traveling. I dont have a choice of which reader the internet cafe uses and therefore, I may not be able to use this card while on the road.
I also notice no significant difference in speeds when downloading from my camera via a USB connection. This may be because I am not using USB 2.0.
In summary, this card is not worth the extra expense if you do not have a brand new reader using USB 2.0. If you have an older reader, you will need to upgrade to a new reader that can work with Ultra II (I am sure that Sandisk will happily sell you one.) For my money, I will stick with Viking compactflash rather than to ever purchase another Ultra II.
Rating: 
Summary: Is it worth the premium?
Review: I'm not sure there's a noticeable speed difference for me in either taking pics or in accessing the card as a drive (including image transfers). There is a price bump to consider. Currently, up-to-date CF memory goes for about a quarter/meg. Therefore, there is at this time a 20% premium for speed you're unlikely to notice.
Rating:
Summary: Worth the premium for high end cameras!
Review: I've seen some comments about this card not being worth the extra premium, but those users did not have a professional or pro-sumer level camera. It is worth it to me because of two advantages over 'standard' comapct flash cards:
******Upload Speed*******
Upload (or Read) speeds with a USB 2.0 card reader will definitely be faster with this card. A full card will take just a few minutes to download to my PC while my old 128 MB standard Lexar card takes LONGER to complete! I can only imagine how much longer 512 MB would take on a regular card. Still, it may not be enough to justify the extra cost if that's your only advantage.
******Write Speed******
Here's the real advantage and cost justification: I have a Nikon D70 and can shoot continuously until the card is FULL. I cannot do this with other cards I've tried. They always fill the buffer up, and I have to wait. If getting shots without worry of waiting to take the next one (even in sub-second waits), this is a perfect choice. There won't be a just-missed shot because your camera and card are feverishly trying to write data. Again, users of consumer grade cameras will not notice a big difference in write speeds, if at all. I also have a Nikon Coolpix 995, and the difference in write speeds is completely transparent.
******Conclusion******
The price premium for this card is very much similar to other premium items on the market. If you have a car that normally takes 87 Octane gas and sees no improvement with putting in 93, it isn't worth the higher price for the premium fuel. The same goes with this card -- if your camera can take advantage of the much improved writes speeds, this is one of the best choices. If it can't, then definitely buy the standard card and save some cash.
Rating:
Summary: don't forget to backup your camera
Review: The Ultra II CF card is a great product, but with all microelectronics there will always be the possibility of a DOA, or catastrophic crash when you least expect it. Yet we see these painful reports about people who've "lost all the pictures from the trip of a lifetime, and it's all SanDisk's fault!"
Hey, it's a computer! Back it up! If you can afford the high end digital camera and the ticket to Paris, you can afford something like the EZDigiMagic 20GB backup device that fits in the palm of your hand and lets you save your stuff whenever you want. And voila, your life won't be ruined again!
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