Nuespeed, H&R, Eibach.... there are many companies that make decent springs. 2 inches is pretty low, youll may even run into some problems with wheel rubbing, especially if your running larger wheels with incorrect offset and tire size.
As for a camber kit, cars react to lowering differently, one could be lowered 1 inch and need a camber kit, while the other is lowered 2 inches and doesnt need a camber kit. My suggestion would be, after you lower it take it to get it aligned, if they say you need a camber kit then you should probably by one, or buy a set that way if you need it its there. If you dont then sell it.
