I have ridden both A LOT. Stock and boosted. You won't beat the M chassis in the trees. Nytros are not bad, but they are no M chassis. Stock to stock, I am not big enough to throw the Nytro around in technical situations like I can a CAT. Boosted, they are more even. The other thing I have noticed is that the deeper the snow, the more the Nytro excels. In 3 or 4 feet of fresh powder a boosted Nytro is AWESOME! Hard pack snow, I can forget about the Nytro because when I lose the sidehill I can not get it back and end up in the bottom of the draw or canyon. Granted, when boosted, you can come right back up and out with no problem, but you are one tired pup at the end of that ride.