Best sounding MP3 Player?

I searched,but found no thread on this. Looking for opinions on best sounding player-just need 2 GB.My son just purchased the Iaudio player and it annihilates my Ipod . Incidentally-must be Mac compatible.
Thanks to any who respond.
I was just searching for a reasonably priced one for a friend. I don't know if this is Mac compatable, but it is said to have good audio and only costs $45 on sale (in the 2 gb version).