i put a little over 300 miles on my 14 pro 858 before it sold earlier this season and the built a 14 925 cat and i'll admit i've been a polaris guy for the last 20 years and expected to hate this chassis but i have been pleasantly surprised. Have 150 miles on my cat now and this is how i feel between the two
for a down right tight tree riding sled that still has the power to climb i would take the pro858 with the 3". The pro's ability to side hill in any direction (up,down, left, right and every direction in between) at slower speeds is unbeatable for riding tight terrain. The Proclimb doesn't hold a candle to the pro in that scenario.
However, after spending a couple rides getting used to the chassis and knowing that theres even more power to be had once i get the right clutching in today and get my rpm's up to 8500-8550 where their suppose to be, i can honestly say that the overall fun factor is there with the 925! more low end and more top end (low on r's it was about a wash to the top end on my 858, the customer who bought it was with me)
On top of the power i have never felt so comfortable jumping a snowmobile as i did on the 14 cat, and it makes re-entries a walk in the park, the overall handling is great, down the trail not that it really matters but it is super stable through choppy whoops and you can really get after it. The stock ski's leave a lot on the table, grippers or powder pros would def. be a good upgrade, have been playing with the rear suspension to cure the wheelie issues and it worked well Sunday. I'm hoping with more time on it and i can figure out how to ride it to make it side hill slowly down hill and controlled as i do my pros, but we'll see.
The only thing i can honestly say that i truly hated about the sled is the steering post bushings.... their getting swapped out with zbroz today, steering slop after 50 miles is not acceptable.
last but not least the 2.6 power claw works very well, and i do not see a reason to swap out to the X3, i almost did the swap with out even trying it until i talked to a few guys on here that had, and i'm happy i didnt