I got my iMP-550 in November 2004 and I LOVE IT!
I owned a few sony cd/mp3 players and returned them ALL.. even the most expensives ones did not compare to the imp-550!!!
The 550 has the best sound, it sounds warm and the adjustable EQ is the best i've seen in all new cd/mp3 players on the market! PLUS all the features... the 550 has it all! i heard the imp-900 is as great and has even more headroom for the EQ adjustments... it'll be my next purchase.
