Ski-Doo is the best bang for the buck? Do you even know what that phrase means? It doesn't mean spend $4000 more for a couple horsepower and theoretically better fuel/oil mileage. The chassis is a personal opinion and cannot be valued.
I'm not dogging the Ski-Doo, I love my E-tec Renegade X, but if I were buying a sled this year, there isn't even the slightest doubt, it would be a Switchback. Bang for the buck, the Switchback couldn't be beat if Ski-Doo threw in a set of 44" boggers and two weeks prepaid with a disease free hooker.