I need some help figuring out a new 9 speed rear derailleur. I just recently snapped my LX Deore off my bike(no surprize.) I want a strong rear derailleur setup so i can prevent this from happening again. I dont want to spend more then 100$ for the derailleur and shifter. Im putting it on a demo 9 pro, i have an mrp chainguide. I ride and race dh.