Summary: I have gone through many Mp3 players over the last few years, hands down this is the best. Sound is noticeably great. The screen is visible in bright daylight, and from strange angles, which is a nice bonus (i have NOT tested any video, and probably never will) 2 reasons for 4 stars out of 5: The user interface is not intuitive. It is frustrating for the first few days. Menu's are hidden, and icons don't always make sense.
Summary: Well, i won't make a long review.
Having the iPod Nano V6, SansaClip+, SansaClip Fuse, iAudio 6 and a mix of older Sony's, iPod's etc ... I think the best sounding player to me was the iAudio 6. Followed by the iAudio J3. The difference is marginally, but somehow the 6 just performed a tiny bit better to my taste.
Pros: Great sound, EQ features and options, portable, battery