Wow, so fast, thanks.
Price range. <$500
Flash or HDD - either is fine, but lean towards flash.
Size: small to mid sized. ie around nano to Ipod type size.
Amp - no seperate amp. Plug earphones directly into player.
Music service- not important. Already have hugh music collection.
But as I was saying... if audiophile sound quality is the most important factor, what mp3 player(s) are recommended?