I can't help it, Paul; my ears place the PPG, Wavestation, VS, and Evolver in the same category. I realize this is not technologically correct, but I speak purely as a musician. Those four instruments could serve me equally well in the same ways.
And yes, you're right. I've become infatuated again with the Poly Evolver Keyboard. Nothing against the P'08/Rev2. I'm just constantly struck by the quality and flexibility of sound. There's absolutely nothing like a PEK...except, of course, a PPG, Wavestation, or VS.