Actually, the AA -S410 ERB side lever does have adjustable power, and while the Cyclone may be a bit quieter, the difference is "pfffftt vs. pffftT!". Either is very quiet. The AA-S410 trigger has a bit of side to side slack and the safety is a button built in to the top of the trigger blade itself (odd, and I think a bit dangerous as you have to press on the side of the trigger of a loaded weapon to set or release the safety). But the second stage is quite crisp. It's not the match grade trigger on my Walther LGR-U or even the IZH-46M, but it is a very nice trigger and I haven't felt compelled to do any trigger work or adjustments on it. But as I say, when I shot Gene's FX Cyclone, I really liked that rifle as well. Fine trigger. In the composite stock, much lighter than the AA-S410 in walnut, if that makes a difference.
But the real answer, if money is no object: Buy them ALL!