I have simmons, and C&A sports on my 2 firecats. I prefer the Simmons. They are not as aggressive as C&A pro's, but they hold the snow while trail riding better. They are wide,. but they are worth the money. I am a beliver that although the stock ski's are decent, after market ones are better. I even tried the dooley on 1 stock ski, and that is even better than stock alone.