Thanks for your input, Rosetree.
I've listened to the demo very carefully a few times, and I can't help feel that even though the Montage sounds nice, there's a certain "sheen" to the sounds that make them sound a tad "synthy".
Maybe it's the effects, or maybe they add some FM synthesis mixed with the AWM2. A Kurzweil, for example, sounds less processed, and therefore, perhaps more realistic. Same thing applies to the SRX-06/07 boards. With the Montage, however, the sounds are very pleasing to the ear, but they may not be as realistic-sounding as the two products mentioned above.
This is my opinion from what I've heard. Maybe, I'm just imagining things!
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Mike