Having purchased both, in one word...NO.
I bought the standard model through LE channels when the Shield first came out. It has the LE trigger (i.e. not the Mass. compliant trigger) and standard sights. Three weeks ago I purchased the Performance Center version with the ported barrel and fiber optic sights mainly because I felt the trigger is much better.
Shooting both at the range, the PC version does have a better trigger HOWEVER the ports crud up the inside of the slide and make more work to clean. I see no appreciable difference in recoil or muzzle flip when shooting my duty ammo. Adding to my disappointment, the fiber optic tube in the front sight disengaged from the base at about round #35 and was never seen again.
Bottom line - buy the standard version and put an Apex Tactical trigger upgrade in it.