I think I saw on GI that they have a nice A3 in the boneyard. If you don't mind doing a little work, that is the direction I'd go in.
After doing the research and getting an AUG and having it die on me, I'd go with a JG. Classic Army is nice, but I don't know that it is worth the money. You're going to want to upgrade the gun anyway so you might as well find something available for upgrades. Consider avoiding the Military versions because they don't have a rail. You'll be stuck with the built in scope. It isn't bad, but options are good to have.
The A3 gives you multiple rails, spreads the weight through the entire gun because the upper is metal, and looks better to me then the A1 and A2.