I have a 01 Sno Pro 440 and a F7. I have 180 miles on the F7 and no problems. If your dealer is a good dealer and they follow the proper set up procedure and you are willing to take the time to break it in properly believe me when I say the F7 is worth it. The suspension blows away the ZR's (in my opinion of course) . The handling is different, but it doesn't take too long to get used to. I would recommend ditching the stock 4 inch carbides at the dealer though.... I put 6 inch Bottomlines on and it handles a lot more positively. I bought the F7 and love it. Think about it... I choose to ride something other than my Sno Pro. I never though it would happen!!!