Can't go wrong with either, but I am now running a POSI blower. No times yet, but it feels better than it did with the old port. Old port had no markings, so I'm not sure who ported it. I had the blower back within a week of sending it to POSI as well. If that matters. Biggest thing that sold me on Brian's work was talking to him in person at the BG NMRA event. That and they make power.