I have the compact Experior. Love the gun. It’s my wife’s favorite gun to shoot. I carry it some, seem to reach for my EDC X9S for concealed carry. The Experior is very accurate. The grip feels like it was molded for my hand. Staccato/STI’s seem to have a square grip, this grip feels rounded if that makes sense. Don’t have a full size EDC X9 to compare against.