I'm guessing that these people who think that the X5 is big have never actually handled one. It's tiny. Maybe not iPod mini tiny but definitely 4g iPod tiny. It looks bigger in pictures.
As for what I perceive as negatives:
- The player's audio capability with all the eq effects off appears handicapped in such a way that it is necessary to tweak in order for the X5 to sound good. For instance, I've found that I absolutely must have the BBE setting raised a few notches or else the player sounds very muddy, and I've always listened at the flat eq setting with all the other players I've owned.
- I think the midrange on the iPod is better. The midrange on the X5 is a bit attenuated, and I can't get it to sound just right no matter how much I tweak the settings. To me, the X5 kind of sounds like there are holes within the spectrum, but you probably wouldn't notice unless you've had extensive time with another player, and the sound quality overall is clearer and more vibrant than the ipod's.
- The lineout isn't a true lineout. Cowon kind of tricks you into believing it is because the volume doesn't change from about 1-34, but at 0, the volume cuts out, and at around 34 and above, the volume becomes noticeably louder.
- ID3 tag navigation would be nice, but it's really not a problem if you organize your music.
- The case is optional. But the X5 casing is pretty scratch resistent so it's not really a big deal.
- Not a big fan of the joystick. It's too small, and the player also lags when you quickly scroll up/down a list. I wish someone would implement a mini trackball as a navigation device (since you-know-who already has a patent on the perfect navigation device).
- The ability to view pictures is just a gimmick. The screen is too small and of too low a resolution to really enjoy this feature. The regular menus look very nice though.
I've listed a lot of negatives, but I'm really nitpicking. I've gone through like 10 players trying to find the perfect replacement for my late Karma, and I think I've found it in the X5. It's really a very nice player. Great size, great sound, adequate battery, great aesthetics, etc. In short, GET ONE!