A friend of mine has the compensated version of the 10mm Glock. I think it's exceptionally loud, and don't like the recoil too much. I am a little biased against Glocks to begin with, so maybe you should take this with a grain of salt (or is it sugar?).
I picked up my first Glock 20 in July. I haven't put many rounds through it yet, but the five hundred to a thousand I did felt really good. I really like mine, the grip fits my hand perfectly with a Hogue sleeve on it.
I have a Glock 29 (10mm compact) and used to have a Glock 20. I sold the 20 since the grip was way too thick. If your hands are big enough it's a great weapon--I love my 29, it's by far the most powerful semi I have. If you really want a 10mm make sure you rent both models first before you buy. People with small hands--get the 29.