Ok, normally I'd make a few suggestions and tell you to try them out and see which is for you, but I'm just going to go ahead and tell you to get a Cowon S9, cos it matches your needs pretty much perfectly.

1. Not an iPod.

2. This player hands down has the best sound quality of any player I've used. Any review you read will point this out. And it comes in a 4, 8, 16 or 32GB model.

3. You can browse your collection by folder. You can browse by MP3 tags, but like you, a lot of my music is remixes/DJ sets etc. where tags aren't helpful so in the two years I've had one I've only used folders.

<a href="http://www.cnet.com.au/cowon-s9-339294580.htm">Review</a>
<a href="http://www.engadget.com/2008/12/29/cowon-s9-review/">Another review</a>