I have a bike with T-5's thats stock port, a ported bike with CPI's and a ported bike with SST's. When the T-5 bike was mine, (its now one of my sons) I would race a friend with PC's, pretty much the same mods as I had at the time, which were pipes, reeds and tires, if I remember right. He would get me out of the hole but I would catch up, by then the race was over. Now, my bike with the CPI's, believe it or not will lug around the best of all my bikes. Its an aggressive dune port with 33's etc but still decent low end with some timing advance and just runs great. The bike with the SST's is a pain in the ass to tune, but it runs good when it runs, if you know what I mean. As far as sound goes the Toomeys sound the best of all my bikes. Fit and finish wise Toomey is about the best your gonna get. The chrome is outstanding and they hold up great. I would suggest toomeys over PC's, just from my experience.