the mud lites are a nice aggressive tire and in my opinion unless you are going mudding more than trail riding they are to aggressive..if you want a nice tire for mud,sand,and trails my first suggestion is hard to beat like i said,puresports bandits are nice,a friend of mine has fast trekker's on his 400ex also and he seems to like them,but according to the dennis kirk catalog they are only 2ply bias..Bear claws are also nice but again a little aggressive for trail riding.maxxis razar's are nice also but kinda expensive if u ask me.lets us know what you end up buying..