Hi Dave,
just a question: in case you might like the Pro enough to take it out a few times, have you considered the little satelite sytem by yamaha, that George and I have been talking about? Much better sound than the internal speakers, louder, but small enough to take with you gigging, and you can place them so that they are right in your face.
Hope you have more Luck/fun with the Pro, than you had with other KB in the past.
Eric