My wife has the Shorty stem on her mountain bike. Shorty comes in really short lengths is why. She likes it. Besides the clamp, I think they're 1-1/8", so you may need to run a shim if yer 1". Thomson makes nice shims.
Azonic is pretty well known for quality stuff, and that's technically a downhillers stem, so it will probably outlast you & your bike.