Gary,

Thank you for taking the time to post all of those links. Looks like there are some good deals to be had on used MIDI controllers. The only thing is, I've had nothing but bad lack buying musical items -- instruments in particular -- from eBay.

I really would like some thoughts from folks who have experience with some of the low-end controllers to be found on Amazon for under $150, such as the M-Audio products, Behringer, et al. Wish I could go higher end, but $150 is it for right now.

Thanks, everyone!