The only problem with the Rockers was that they dug too hard in the sand and went down not forward and they didn't stick to the rocks as well as the bighorns did, and nowhere near as good as the Mongrels. In mud mud the mongrels balled up and sucked. In shale bottom muddy/clay stuff like in the vid at the front of this thread, they do great. this weekend we went to a black dirt muddy place and the rockers did great, the mongrels sucked. Depends on what you do more. I do have a set of 26.5" rockers with about 50 miles on them that I'm on the fence about selling. if they suck on the track and slick rocks, I'm moving them on. I know they work good on creek banks and dirt/mud