Magnaport isn't too far away from me. They do excellent work, and that fact has been well documented for years. If you do it, go with them, even if you have to wait in line.
Personally, I have never owned a ported anything, and hope I never will. I'll take the recoil, and keep my hearing. I still shoot my 480 Ruger with 325gr handloads with one hand. Gimme about 9-10 more years, and maybe I won't be so "sporty" any more......grins