I would also choose Stock or CM9 - and if you need the camera often, then there is no way around stock, in my eyes.
Unfortunely the Camera in CM9 is barely ok for daily usage, in my opinion.
If the cam is not much needed, CM9 is a major step in terms of smoothness, although the Stock-ROM's overal performance is solid.
If the decision results in CM9, i would recommend to use the vanilla-version - modded editions are rarely maintained or really testet, and you never know if there will come the one bug that causes you trouble in your producitvy apps / missed phone call.
// edit: Ok, sorry, i had not seen that you already made a decision