Rating: 
Summary: Best value, incredible sound for its size, confortable.
Review: This is an extremely awesome headphone, I've had them for only a week, and the more I use it the more I like it, its amazing the sound quality and the bass for its size, what its even better is how it goes deep into your ears (make sure you put it deep) and its so confortable, you can wear it for hours and it doesn't bother your ears at all. Also the noise blocking for in ear headphones is the best I've seen. It comes with a nice little case to keep them and an extended cord. If you want good in ear headphones, this is definitely the best for the value, confort and sound.
Rating: 
Summary: cord connection adds weight to one side
Review: I own both a MDREX71 and 51, soundwise they are both great, but the thing I don't like about the 71 is the connection to the cords, it adds weight to one side of the earbud. It's great for those with a volume control thingy, but if you want just a earphone to the sound device, i recommend the 51 over the 71 model.
Rating:
Summary: Nice sound, a little uncomfortable
Review: The sound is great for ear buds. I was glad I read the reviews stating to make sure you put them in your ears all the way.The buds come with different size covers in case you have smaller ear canals. However, I must have really small ones because they still don't fit great. They're a little uncomfortable at times. Certainly not for extended wearing, which would be the case if you're buying them for work. I'm not disappointed in my purchase however and would recommend them to others.
Rating: 
Summary: Very disappointing
Review: Based upon the mostly positive reviews, bought these. Not very good. The silicone (or whatever) earbuds are very comfortable, but that's about all there is that's positive to say.
Very tinny and anemic. No range at all. Ultimately, they sound lousy.
I bought these as a replacement for the phones that cames with my Iriver HP-120 Mp3 Jukebox, but these earphones are very clearly inferior.
Rating:
Summary: $31.95 (amazon.com) + FREE Shipping! Are you kidding?!
Review: Though the "Free Shipping" terms stated it would take anywhere from 7 to 9-Days for delivery, I couldn't pass up the fact that I might be able to pick up a great pair of headphones for far less than anywhere else I could possibly find them...including eBay! So I pulled out the credit card...and put the order through. Three days later (much to my surpirse)....I'm on my motorcycle thumping Kanye West's "Through The Wire" under my helmet! Top notch quality sound. Carrying case for the interchangeable silicone earpieces (depending on the size of your earholes), but a case for the headphones themselves. You don't want to spend $100 for an awesome set of earbuds....this is your only other option without sacrificing the sound. Bar none, the most bang for your buck. You won't be disappointed.
Rating:
Summary: Service problem
Review: While I enjoy the comfort and clean sound, the extension cord was defective from the package. The pigtail on the speakers is too short to use exclusively. All attempts to get a replacement without delivering the cord to an authorized repair facility failed. The closest facility is 3hrs. one way from me and mailing was not an option, nor is the extension available as an option. Sony's repair service policy is unacceptable!
Rating:
Summary: Great for instrumental pieces; so-so for vocal or voice only
Review: Given the strong reviews and the recent price break, I decided to purchase a pair for travel use. On balance, I would still recommend them, especially if your playback device contains a tone adjustment. I don't believe other reviewers have mentioned the very noticeable sibilant sounds (s, sh, ch etc) that make listening to vocals or speech somewhat distracting and tiring. You may have a better sample or batch, but my headphones sounded that way from day one. If your device has it, adjusting the treble DOWN will make the sibilant sounds much less intrusive. In conclusion, the MDREX71SL will find its place in my carry-on. I'll have to wait to check how well these phones will seal out the aircraft noise.
Rating:
Summary: Great for working out!
Review: Wow, what a difference from the $15 pair of Sony MDR-E829V ear buds I had before. The first thing I noticed was the isolation from outside noises. The buds really seal off your ear. The clarity is excellent and the bass is deep. Another cool feature is the short length of the cord (for those who wear their mp3 players on their arm). It also includes an extension if you want longer range. By far, the best pair of headphones I've ever owned.
Rating: 
Summary: iPod Users BEWARE! Includes All Other Users Too!
Review: I bought Sony earbud based on price, on CNet review, and on my previous investments from higher end Sony earphones. -The earbud is strange to use. It is kind of gross to push the earbud deep into the ear.
-The extension code is simply too long and heavy, which will pull down on the left earbud. If you don't use the extension cord, it is simply too short.
-These earbuds are simply horrible, awful, and even $7 Nintendo GameBoy Advance headphones are better than this Sony crap. *I was fooled by CNet's review, fooled by reviews from other Amazon users, and fooled by my previous experience with Sony earphones.
**My recommendation is to use your original iPod earphone or try the upgrade iPod earphone.
***There is simpily nothing positive to say about this earbud.
Rating:
Summary: The Hype Is Right
Review: I heard great reviews bout this product, so I bought myself a pair for my new Muvo2 (since I bought the remote, I needed a shorter pair)....and these badboys are AWESOME. Amazing Clarity AND BasS! Well worth the money. The case is a nice bonus too. I only wish the cord was just a few centimeters longer, but that's just cuz the Muvo2 remote is so bulky. The medium buds fit snugly in my ears, and my 3 roomates have all tried them and wish they had'm too! I would highly recommend this. MSRP is around 50, so 35 @ amazon/OD is a steal.
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