[i_don't_know]

I was considering a 16gb Cowon D2, but I read it has a cold, unnatural sound without effects or an amp (neither of which I intend to use). I'm already getting a 4gb Sansa Clip as a "beater" player, but I was wondering if there is something similar to the D2 in features/formats/battery life (of course the battery life won't be able to match up, though) with equal or better sound quality, but with a warmer, more natural sound. I listen to mostly rock, but I listen to pretty much everything. Some of my music is also very complex and distorted (i.e. Dinosaur Jr.). I'm currently using Skullcandy FMJ's, but I'm hoping to upgrade to SA6's (or maybe Grado SR225's) in a few months.

Thank you so much to any help given!