Mike,

Did you actually play the 550 or did you just post from nformation posted on Yamaha's web site? If so, you kinda' forgot the other great features such as the SM card and USB storage, plus a host of other neat stuff not found in many boards that are considerably more expensive. IMO this board offers a lot of versitility, good sounds, more keys than I need and many of the outstanding styles found in the Tyros.

Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)