i know from experience... i used to have 27" msts, then went to 28" laws...
if u do only trail ridding and not a lot of mudding then u wont be dissapointed. MSTs are nothing more than an AT tire, if thats what ur looking for it will work out fine.
if you are getting beat up from the outlaws just lower the air pressure in the tires, get a bigger foot print and it you wont have a problem.