I can't say that 36's are not better than 33's; however, I can tell you that my 33's have not stopped me from getting anywhere that I wanted to go. Admittedly, I don't go "extreme" wheeling. I have done Pritchett Canyon in Moab without assist (I did go around the rock pile because there was no pile). I have done most of the normal Big names in Moab, with the exception of Behind the Rocks, but I have not done trails like Upper Helldorado or the Proving Grounds. Having a super built truck is great, but it would be painful to drive my truck from Washington State to Moab with 36's. I am also starting the think that at some point a truck can be so built that it takes the challenge out of 95% of the trails. Once you get a truck build so well that any one of the three stooges could drive it anywhere with ease, what's the point and where's the challenge? Don't get me wrong, I drool over the super trucks like everyone else, but you just have to choose the level of difficulty of trails you want to run and how easy you want it to be. If you are almost always running super difficult trials, go for the 36's, they will help a ton if you have the gearing to support it.