Joey wrote:check out the kawai k3... same exact filter as the ppg wave
And would sound much more like a PPG Wave than the Siel mentioned above.
The SSM filters do make the basses more beefy and smooth - but it's the raw wave quality, VCA and fast envelopes that make a PPG really bite hard. This combination gives you the bright, tingly snap and deep timbre.
Back to the main subject:
Of the three, I too would choose the PPG system. It may be much more cumbersome to transport, set-up and use - but it has the most unique sound and personality compared to the others. I hate the sequencing, but everything else is fine - provided you have a good memory, patience and don't mind some trial-and-error programming.
Like you, I've been down the Microwave-as-PPG substitute - they're similar, but it won't get you the sound that you crave if you want the blue beasts. Trust.
“I have stretched ropes from steeple to steeple; garlands from window to window; golden chains from star to star, and I dance.” - Rimbaud