I dont have any experience with the razr2's, but I love my razrs. I dont do a lot of
cross country so I dont really need a 6 ply tire. It really just depends on what
type of riding you plan on doing with them, and to a lesser extent, what kind of
money you can spend. If the money doesn't matter, and you mainly ride mx then
get the razr mxs, if you mainly ride fast trails get the razr2s, if you do both get
the razrs. Hope this helps.
Oh yea, your question, I dont usually have a problem with too much bite in the
corners, but I've got them on a 450, your 300ex might not spin them as well. They
aren't as easy to ride fast with compared to rounder tires simply because when
they do bite, they bite hard and fast so you have to be carefull not to go over.