This is the one I've been looking at:
Wacom Global
It's suppossed to be one of the best on the market, unless, of course you count something like this:
Wacom Global
I've only seen that one in a single store, and it was over $2,000. I would stick with the first one. Here's the best deal I've found on it:
http://buyeretail.com/product.asp?file=NexTag&i=WACPTZ930&sku=PTZ930
It's a good size for a low price. A real bargain!