Have had a few decent rides with the Cateye Adventure wireless computer on the B1 and it is a sure fire winner.
Wireless operation (always a plus) and an easy to read screen PLUS an altimeter and slope function. It is hard to get better than that. The feature set seems to work just great. It is quite nice to have a readout of total elevation gain for the rides!
The setup instructions for this unit could be a little easier to follow, and the buttons are not very friendly - especially when you have to press two at once. But once its good to go the operation is as simple as pressing the base of the unit in with a click to toggle through the screen options.