I think the g4 will be around a while, longer than the xp unless sometheing radically changes in snowmobiles. Just my .02.
You can still get on a '03-'07 rev and ride 200 miles in a day and get off and not be sore. In the end thats all that really matters.
I agree with how the G4 chassis will be around for a while. Figure, using modern CADesign along with the best possible materials, coupled with the design being made to work in harmony with the engines, there won't be much to change for a while-like cellphones have reached their peak as there is not much to improve upon.
I also agree with the original Rev chassis, I just traded my 2004 and had no problems with the ride all these years. I had been able to log many miles on the XP/XM/XU chassis' and their riding positions were even better. The Gen4 just stepped it up. I have only ridden the Gen4 WideBody so far and it is fantastic.
