I really haven't had too much time listen to both. As I stated I just started re-ripping my cd's to FLAC, so I only have a hand full at the moment. I'll try this week to listen to a few cd's in both formats and get back to you.
I play my music thru Winamp and I don't think there is any conversion that is needed to play FLAC files. I purchased a 4 gb Sansa Clip +, plus a 8 gb micro sd card for it, and RockBoxed it, FLAC and WAV files can also be played on that. Unless I am missing something that these players are doing that I don't know about, there is no conversion needed.
Well truth be told I started to rip in WAV format then I was almost done, 150-200 cd's left, and notice that FLAC files wouldn't take up as much room as WV files so that is what started my re-ripping journey. Since I have the WAV files no need to get rid of them.
I currently have a 1TB External HD and that should be almost full when I'm done, as I also have photographs on the HD. I will then get another external HD and copy this one so I will have identical drives. One will get used and one will not and both will get updated as needed.
James