So I found the Yamaha DTXpress II set, new, for $800. It's a done deal! I've been playing around with it for a few hours and I love it! The hi-hat sounded dead, but I easily livened it up by dropping the decay down to nothing. And cross-faded a ride bell onto the ride so that if I hit it harder, I get the cymbal with the bell ride. Sweet.

I'm loving this. There are so many sounds and ways to program it. Now I just need to figure out how to hook it up to my mac.