I made a thread on this topic a while ago in Commuting and got some helpful replies but looking for more.

Basically, I'm looking for a nice pair of panniers that I can use for some light touring, but also just have one of them I can use for commuting. For the latter purpose I'd like one with a messenger-bag type strap (I don't like backpacks too much) and one that's waterproof although I guess it wouldn't be so bad to just have one that comes with a little raincoat.

Anyway, I've already looked at the Arkel Commuter - nice although a bit on the massive side - and the Ortlieb Back Roller Plus - nice, although doesn't have a strap like I'm looking for.

Any other suggestions?