I finally got the new 18 demo out for a ride. First off it's a early release snopro bone stock except we threw in a set of 68g weights (we ride 9-11000 ft) I set the shocks like I did on the 17 mtn cat front shocks at 60 front track shock at 60 and the rear track shock at 130, it didn't have the evols on it so no high setting. 0 miles on the sled when we left the truck, also had a brand new 0 mile 17 mc on the ride my cousin bought this week, stock with high elevation clutch kit (from cat) which was a set of 66g weights and a different primary spring and a Slp can. We put 75 miles on these sleds on our ride and nothing but smiles out of both of our faces, both sleds ran amazing handled great with zero problems (other than the 17 would flood out and had hard starting problems a few times during the day) the 18 engine is all they claimed imo it was really snappy on the throttle bottom end mid range and top end were all on point and pulled hard. I rode the 17 aswell and it runs great too there is nothing bad about that engine it run great but the 18 was a bit snappier and more powerful in the low and mid range. Climbing both sleds were pretty even I would say. the snow was pretty good, lots of traction, we were probably trenching down about 12" of good snow down to the base below. By the end of the day the power was noticeably getting stronger as we got some time and miles on them. handling was pretty similar on both sleds ( no surprise there they are the same chassis) snow wasn't really deep enough to really test the side pannels out but obviously they will perform better in the really deep powder ( the narrower the better). All in all I was sold on the 17 before I herd about the 18 changes and my name is on a 18 mountain cat for next season. But the 17 is not a bad sled by any means but the engine and body pannel changes are enough for me to pull the trigger on the 18vs the 17. Anyone that gets the chance to ride an 18 ( setup properly) won't be disappointed it delivers like it says on paper. Now a long summer till I get to ride mine.