I liked the Muzzy over the Samson. The Muzzy is back on the bike. The Muzzy sounds awesome. You can cruise at 2000 rpms and have nice a quiet ride, or you can crack the throttle, just a touch and have it BARK! It's a very, very nice, tight controlled sound. It really sounds amazing. I believe ANY 2 into 1 pipe gives you a decent HP boost, NOT a HP cut.