Anyone tried the new PSR-550 yet? I used to own the 540 and I hear the sound quality of the PSR-550 is almost double the 540. I've seen it adverstised as having 8mbs of wave rom.... Anyone play one or bought one yet?

Squeak
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.