My 02 Summit 800 HimarkX is needing a new track. It is a 15 x 151 and I ride mostly harder packed snow but we do get up into good powder quite a bit and I am not sure which track will perform good and last. I have been looking around at Camoplast Challengers and one supplier has Polaris IV tracks on special right now. I am just wondering what track all of you are running and if there are any that you would stay away from. Thanks