I hated my first gen S:flo, audio quality wise it was just crap against my Nokia 5800 XpressMusic, and utter rubbish against my current Nokia C7, maybe I had a defective unit sold it years ago on ebay shortly after buying it. But I learnt that your playback device is just as important as the headphones. The same is true for computer audio, my creative X-Fi just sounds better than any gen of the Realtek "HD" audio no matter what marketing babble they wrap it in.
As far as i know, this company never produces any high quality dedicated music device until it comes to S:FLO2, personally I wont get my hopes up for any devices made before S:FLO2. I also believe the SQ difference is huge. From comparison of players I ever owned, S:FLO2 stands a very solid place even competing with other high end players which cost 100 bucks more than it.
Edited by gameboy115 - 7/31/11 at 7:59pm