RE: Remington 332 vs. Browning Citori
Browning all the way. You'll be hard pressed to find a gun with better fit, finish, and function.
There are a lot of Over/Under shotguns out there. Ruger makes a nice one, Franchi is really nice, SigSauer, and they keep right on going.
I've heard a lot of bad stories about Remington Over/Unders though. I may be wrong, but it seems like instead of adding to their line, they keep changing things and redesignating the models. Makes me wonder if they just can't get it right.
If you have the money to drop on the Browning, that's the way I'd go.