MJ, it has been documented that they've had a few problems. Mine, on the other hand, has been great. It sounds great, has tons of features I want and has not faltered once.
Ketron has always made good modules for many years. I used the Midjay for more than a year, along with an external control keyboard.
A lot of guitars players use XD3 and/or SD3 to accompany themselves.
I know Frank V. uses his a lot and has had no problems either.
I previously had X1, SD1, and SD5 as well. No problems with any of them.
DonM www.donmasonmusic.com