Have you tried and S9 or a J3?... reading reviews of Cowon players, it sems that most of them have very poorly made iterfaces... Not so with the J3 and S9. Yes the default interface is kludgy and weak, but with 40+ options for its modular custom interfaces, I believe there is really no reason to use the default one.
I have not used an X series Walkman, and so can't compare the two; just wondering though:
1. Can you control music playback (prev. next, play/pause) from the file browser (aka the music selection screen) and does the file browser let you control the speed of scrolling, size/color of font, ect.
2. Does the X support Album Art gestures? For example, I can slide my finger up or down to change the volume, tap to play/pause, and swipe left/right to go to another track (forward or backward, or swipe both ways to get a random track)
3. Can you control music playback from the Main Menu?
4. Are playback controls usable when the screen is off?
Simplicity wise, I guess the Clip+ probably has me S9 beat... Too many options!