Rating: 
Summary: Definitely worth the cost
Review: This is a very good printer. I am happy with it, it hasn't failed me yet. In comparison to my previous BJC-6000, it is basically the same model with a few minor differences. The paper tray is now removable and is improved, and on the down side the normal print mode is a bit slower. However, if you bring down the quality level down one notch, their isn't any noticable difference in text and minimal difference for graphics and it prints twice as fast. (You can take it down even one more for draft mode.)I am using a PC with the parallel connection and have had no problems whatsoever. I have not tried the USB interface (although I could, I just don't want to buy a hub.) I have no opinion on mac usage either. However, if you looking for a mac printer, you should probably look at something else (like an Epson, many like these for macs) as I have heard bad things about this printer on macs. The separate cartridges are great. And this printer is definitely cost-effective. The black only costs about $12 to fill, while colors about $10 a piece (C, M, and Y). I don't recommend the photo cartridge, it makes little difference but it does give more colors for the printer to pick from. You don't have to replace the cartridge every time for any color, just the ink tank. Do use a high quality paper, though. The cartridges need to be replaced only about once a year, and they include tanks when purchased. The price of the cartridges (one black, one color, one photo) are about the same as other brands of printers, and you don't have to replace them very often. If you don't want a low end printer but you don't want to spend hundreds of dollars on a printer, this will do the trick for you. Text quality is much like more expensive inkjets, and picture quality will be fine for any casual user.
Rating: 
Summary: Do not buy this printer!
Review: This is the most frustrating printer I've owned. It's print quality is OK, but the paper handling is a disaster. It feeds two or more pages at once, jams, and then smudges. If you try to print a document longer than three pages, you need to do it one at a time or it's sure to jam. It also is very slow for the first page. There is no excuse for Canon selling such a dog.
Rating:
Summary: A PEACE OF [JUNK]!
Review: When I first purchased the S450 it worked well. Then about 3 months later, the feeder began feeding 2+ sheets through at the same time. I exchanged that unit with Canon and within 1 month I started have the same problem with an added twist, ink smuge. Take my advice, RUN LIKE HELL WHEN YOU SEE THIS PRINTER ON SALE!!!
Rating:
Summary: A PEACE OF [JUNK]!
Review: When I first purchased the S450 it worked well. Then about 3 months later, the feeder began feeding 2+ sheets through at the same time. I exchanged that unit with Canon and within 1 month I started have the same problem with an added twist, ink smuge. Take my advice, RUN LIKE HELL WHEN YOU SEE THIS PRINTER ON SALE!!!
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