I'm in the same boat...gave my brother my USH and then realized I couldn't find one with a thumbhole to replace it without going online.
I've debated a 220, especially now that they have wood stocks available for them, I'm just trying to decide how much money I want to put into one.
Everybody I have talked to said the 220 is slightly more accurate than the USH with a better trigger and obviously quicker reloads. Honestly though, I doubt you can go wrong with either one.