I am going to upgrade my crankset. I don't know which one to go with Truvativ Stylo 3.3 team, Shimano LX or XT. Any suggestions? I weigh 200lbs, so I am on the heavier side of mountain biking. I like the price of the LX ($129 at bluesky) better than the XT. The bike is a Gary Fisher procaliber home build. I know it should probably have XTR, but I don't want to spend $400 on cranks. Thanks for your help.