i've got the p556. runs fine. i even rapid fired a full beta mag once from the hip. went all the way through with no trouble.
my only complaint is the safety. in the fire position, it rubs bad on the joint of my thumb. finish wears off quick behind the ejection port, but i haven't noticed any rust in its place.
Favorite range gun for the money - CZ 75B or STI Spartan V 9mm
Go-to carry setup - Walther PPS or PPQ in FIST kydex holster 1AK
Favorite semi-auto design - HK P7
"A Sig is like a lightsaber - not as clumsy or random as a Glock."