I use 1-1/2" staples with 1/2" crown, I hate using a screw gun.
I don't like promoting one brand over another when they both do the same job, but I don't think there's another product like Halex out there yet. Personally I hate using plywood products instead of cement products but when the increase to strength is substantial .... we just don't have a choice.
I'll try to put a specs page together for this product and if anyone knows of anything similar, I'll add that too.