i just rode a 600 h.o today after testing at school and wow does that sled go! this sled is all stock and she really goes lots of power all the way through bottom,mid,top I had this sled up to 95 mph and she still had some but there was a road and some trees coming up quick. great breaking, suspension all the way around the fronts great, the ripsaws also awsome, turning is easy gauges are easy to read. just a awsome sled. she is also pretty light. carving was great but i could not keep the skis down they were off the ground about a foot. but man am i pleased with a great sled i almost did not ride it but my buddies like oh come on. but i could not resist hitting jumps with that sled is nothing the suspension just soaks it all up and when i landed i didnt feel much. this is my little review i guess lol. but i would personly go with the 2007 IQ 600 H.O CFI but no complaints on this sled.