Cowon i9 vs sansa clip
I have nearly all the sansa range E260, fuze, view, Clip plus a couple of earlier models. I purchased the cowon i9 - and using sennheiser IE6 and IE7 I have found the Cowon a significant step up in terms of sound quality. Moving back to standard earphones and i could not tell any difference.
The fuze user interface is easy and intuitive for me (age >40) and found the interface on the cowon a bit more confusing. That said the cowon is my choice for sound, the clip is back up for sport and travel