Thanks again Cass and Bill. Now I await the UPS truck

You all have me excited. DonM's comment makes the best sense for me: Since the audience couldn't tell the difference, I might as well stick with one unit, but enjoy the stereo field that I hear from my keyboard speakers. I do like the notion of the unit placed behind me and it did sound very awesome on that one job the other night.
Cass, what didn't you like about the Roland spec?