I have the Road Morph. Road Morph has the dual-tube stem functionality (presta and schraeder), mine has an air pressure gauge, and the 2005 version has a non-removable plastic piece around the mid-barrel for hanging on a frame (I don't like this bit, but you don't have to hang it on the frame if you don't want to). I can use the Road Morph to pump any tire, including my mtn bike tires.

Road Morph G (G = with gauge, I recommend):
http://www.topeak.com/2006/products/...roadmorphg.php

Mtn Morph: doesn't come w/ a gauge:
http://www.topeak.com/2006/products/...ntainmorph.php