My advice would be look for a good used one, miden. Seems a whole bunch of buyers not prepared to do the work to customize it, and many let it go with very little playing miles on it... They are built like tanks, so you shouldn't have to worry about button wear or keyboard contacts, etc.. Just make sure there is no problem with the touch-screen (rough handling can cause some problems), and you should be fine.

Their loss could be your gain!