The QA has the same trigger pull every time, sort of similar to the way a glock's trigger is. The AS is more like a sig sauer or some s&w's where you rack, decock, then take your first shot as double action and the rest as lighter shorter single action shots. I very much like the AS trigger personally. The double action pull isn't near as nice and smooth as my sig 226's. The trigger reset is very short and the single action pull just fine. If you're used to a gun with a decocker, the AS trigger is the way to go. If you're a glock shooter the QA might be more up your alley.