I have to agree with the organ sounds on the 550... They do leave much to be desired. They're really bad in the lower register. However what I do like is the ability to turn the DSP(fast) on with one button.. I think using DSP (fast) makes them sound a little better...... I've played with the drawbars on the 740 (and had them on my old MZ-2000), and I thought they were pretty good on the 740. I can only assume they sound better on the 2000.

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.