Don, what's your budget? Here are the most popular choices:
Yamaha - S900, 700 500 series or earlier PSR 3000,2000, 1500, 1000.
Roland - G70, E80, 60, 50
Korg - PaX2, PA800, 500.

Can't go wrong with any of these. Features increase with price. Lest expensive is still good, most expensive probably too much for you right now, but that's up to you.