Xpipe will yield the most power as proven on the R8, Gallardo and Huracan. I think you are seeing a solid 32whp gain. I've had a lot of experience with Fabspeed and their Xpipe design is very well done and probably your lightest option as well. We are working on a calibration strategy to break the 1/2 mile NA Huracan Record which is held by another customer with a similar custom Xpipe exhaust design at 161mph with no software. If you are a track go-er DM me as we are focused on track data and performance than HP gains.