JAM has no relevance, since I config hack every addon I have to use the same weapons, and my gaming compy isn't linked up to the net (thank god). What kind of "realistic mission" has 3 types of M16 model being carried? I figure that if each side is using weapons from one pack (or two, max) each, then JAM is not necessary.
As for the eastern weapons, I find the RHS AK weapons orange garish, and the metal is too dark. ORCS' pack has finer detail, a moving action, plus an animation pack to go with them. I use RHS' infantry, but I've reconfig'ed them to use ORC weapons (which are reconfiged themselves to be realistically inaccurate, and use RHS sounds). Cannot go wrong.
I'm a bit of a realist - ORCS weapons look (and now shoot) in the most realistic manner, therefore I'm a stickler for them. On the other hand, RHS has the best infantry/Spetznatz/SOBR, and unique weapons like the V-20something .5in sniper rifle are definitely good. But I think that ORCS' AKs are world-dominational.
C"G"McD.
PS. Everyone who doesn't play multiplayer should learn config hacking. Every western vehicle I have has "NFOR" somewhere on it, and all eastern ones have the Russian Federation flag replacing the star.