Trying to figure out the differences between the qsc and the stm rage 3. I'm gonna get a whole new clutch primary and secondary (stm gen 2). I can't decide between the two. I have a stock maverick stock tires and ride some sand, gravel trails, and also ride mountain trails. I just want best belt reliability and engine braking. Witch will give lowest gear ratio and best engine braking. Also is the stm rage 6 worth the extra money. Just want the most reliable. Thanks in advance.