I know the answer to this question is different for everyone since trail riding & powder sledding is entirely different types of snowmobiling as well as different types of people with differing interests. For me I'm a long distance power cruiser with a need for speed but a Yamaha 4s with EPS has brought me back to the challenge of the twistys where it all began many years ago. The straight line lake blast has lost it's luster just don't care to do that anymore. I like being outside in winter & everything about snow except when it melts. Looking at scenery is aok but living up north for 10 years all the trees are starting to look the same. I still get a kick out wrenching on my sled for handling performance no engine stuff thus the 4s likeability. Hanging with riding buds is a good thing but that can get complicated so I'm riding with or without buds. So I guess it boils down to I just like riding snowmobiles fast & getting the most out of my sled handling wise on trails & FRs. How about you?