Hi Alice, I just got a Topeak morph, and it seems to work very well. I actually ordered the road morph for high pressure tires, but they sent the mountain morph instead. I tried it out and there's no problem getting 110 psi into the tire. With the foldout foot peg and handle, combined with the hose connection it's very easy to use.
I havn't had to use it out on the road yet, knock on wood, but the test worked great.