Hank, I do have one and I absolutely love it. It's light in weight and does what it does very well. The user interface is so simple even my wife can do it
. Only 49 keys but plenty for it's intended use. You don't hear much about it but most of the big touring acts carry a couple. Only two negatives. No transpose button (using it with a controller keyboard is a workaround if you need that feature). The second (and more serious) is that there is a very slight kind of metallic sound in the upper register on some voicings. This can be easily controlled with a good mike and some experimenting with the loudness of your vocal imput. I use a plain old SM58 but sometimes a E200 LDC. The problem with that (the third negative) is that there is no phantom power and you'd need a power supply (Rolls makes and very good and inexpensive 1/1).
I can tell you this. If you ever use one, you'll never use a on-board (or standalone) harmonizer again. Absolutely a blast. Every gigging musician doing vocals should have one. JMO, of course
. Listen to the demo on the Roland site if it's still up there (the one with the gospel singer). I'll try to answer any specific questions if you have any. They used to be in very limited supply but I haven't checked lately. You could check with George Kaye or Dan01.
chas