If I were you, and I had the cash, I'd look at a Boss GT8(or Me50, costs much less, but has no amp models) or a Line6 Pod xt Live, or even the desktop Pod Xt, both of those units should get you pretty much any sound you want (apart from weird synth type sounds and crazy stuff like that). Distortion pedals are not just for amps with no distortion, they are for everyone! even folks who like their amps distortion, but want a varied sound...I know I have three or four distortion boxes as well as a Multi-effects unit.
Good Luck Mate.