A couple of months ago, I was on the hunt for one of the no lock
642's. I was almost ready to sign away when they brought out the Powerport Pro. Although it had the lock, it still appealed to me because it had a better front sight and the port up front.
I've read enough on the internet about how porting produces louder discharge and brighter muzzle flash but in all honestly, it really doesn't. I'm shooting Corbon DPX +p rounds along with a lot of 148gr hbwc target rounds and I don't see anything out of the ordinary. I have yet to get sprayed in the face with fragments.
I've since purchased a set of LG405's for it, which shoot to point of aim at 7 yards.
I like this gun and I'm glad I purchased it instead of the 642. The lock doesn't bother me at all.