Think about what type of riding you do, wide open, hills, rocks and roots? I use a torque pipe others use the rev, in my opinion a pipe should be selected by the type of riding you do not by popular opinion. A guy riding in wide open space is going to like a Rev pipe a guy who rides in hills and snot is going to want a torque. Then put your skill level into the mix, a rev pipe is going to have a little more of a hit. Just choose wisely you're spending 190 of you're hard earned dollars.