Fran,
I had the discover 5 in my store for a month and I did something I usually don't do......I sent it back to Roland. I like you, thought the midi file playback was great and the vocal harmonizer worked great. My major dissapointment was that there was no sequencer or chord arranger capability and I was concerned that very few of my customers would want this price of a keyboard just to playback midi files and have no ability to edit the tracks, etc. without using a computer or different keyboard. I also found a few bugs in the software that bothered me and there was no fix in the immediate future from Roland.
However, if it's midi file playback and the ability to have nice sounds on the keyboard are good for your type of show, this would be a good keyboard.
Here in California, I've been told that this keyboard has been a big disappointment to Roland as sales have been really bad.
George Kaye
Kaye's Music Scene
Reseda, California