Registered: Aug 2000
What's your definition of bargain? Prism's seem to sell on eBay for around 50-60 USD for a stock setup, more w/accessories. I didn't care about color, either, until I got the Prism. Mine's great for low light/nighttime, but at the expense of seeing it out in the daylight. It's fine for fairly brightly-lit rooms (ie, the office), though.
I keep looking at the new T|X, but just can't bring myself to let go of my Visor yet - still keep my VDx for a backup unit, too. The T|X really won't do anything that I can't already do, except for BlueTooth (never picked up that springboard!).
Also, the Z22 is < $100 new at Amazon or Buy.com. Pretty basic, but still more memory & a color screen.