I love all the people who say weight doesn't matter... total horsepoo.
Weight is HUGE. People who think it doesn't matter have never ridden an honest light weight sled to see the difference.
5 lbs doesn't matter, but you feel 20, and you REALLY feel 40, once you round the 70 mark it's truly amazing what a difference it is.
You have to lose 5 to lose 70, so it's all incremental. The lighter you start, the lighter you'll get. (in general, some can't lose as much as others)
btw, for the skidoo... fuel capacity is 10.6, lower than the other two sleds without a doubt, but to be fair, the doo measured should be a 146, as it has a more similar footprint to the cat or poo 153 & 155. the 154 doo is similar to the 163 sleds really. (they still suck, MY dealer told me so)
Dork! Get back to work.