Why do you want ported barrels, OP?
I have 4 shotguns with ports. One is Pro-ported (the name that Mag-na-Port uses for shotgun porting), one that is factory Browning, and two that are Angle Ported by Ballistic Specialties.
All are somewhat older guns, e.g. 15-20 years old. My current competition clays gun is not ported, and for a reason.
If I know more about your goals, I might be able to offer some perspective.