Originally Posted by ymfarhi
Yeah, I've heard I should get the rockbox. But does it change sound quality? Or just user interface?
Basicly asking what is it good for?
I didn't notice any difference in sound quality, but with rockbox you do get superior EQ. I'm not a fan of EQing, but the EQ on stock firmware makes the music sound muddy (I have a sansa clip zip and fuze). I rockboxed both my sansas because rockbox could load my SD cards quickly. The media refreshing on stock firmware takes far too long. Also, some bad tags in your music files can cause sansas w/ stock firmware to crash; this can be solved by cleaning the tags, but I've never encountered this sort of problem after installing rockbox. Other than that you can install custom themes.
I'd recommend the Clip cause of it's price, and you could add the rest of the money to your headphone funds and get better ones. I haven't heard those audio technicas you mentioned but if what the other posters say is right, then you should just go for a clip and better headphones. I have a clip zip and an E17 (X3 is basically the E17, but as a music player) and it's not like there's a day and night difference between the two.