The best won't come free...and that MSRP is about $200 more than the street price.
I have a Beretta Xtrema2 with Kick-Off that is extremely soft shooting; 3.5" ammo feels like shooting 3", 3" feels like shooting 2 3/4". I would expect the A400 with the recoil reduction system to be just as soft shooting.
A standard, gas-operated 3" gun (those who say you don't need 3.5" capability are correct) with a modern recoil pad like a LimbSaver or X-Coil are pretty easy on the shoulder.
Often wrong, never in doubt...