I have the Tnt set up, so I might be a bit biased, so take it with a grain of salt.
The Clayton system looks like a nice set up, and is good. People are not arguing that it is a bad way to go. The main downfall that I can see is the lack of clearance on the arms, and the lack of a substantial crossmember and skid plate. It seems that you would catch the arms on a lot of rocks and other things, that would hold you up. Yes, the arms can take it, but if you can avoid it all together, then whats the point?
The TnTs on the other hand seem to address all those issues. It has the ground clearance at the belly, and the arms are tucked up higher at the axle end. They have more clearance then I did when I had short arms. A point that I have heard is that people might hit their driveshaft and yoke with the TnTs, where as the Claytons they would hit the arms, which can take the hit. If I were to hit, I would hit the arms, and not the dshaft or yoke. Now this is on a hp30, so I can say for the lp30.
The other thing that is a main drawback is the skid plate and how hard it is to work on the tranny and tcase. My thinking on that is if you have the mechanical ability to take off a tranny to work on it, or put on a sye, then supporting the jeep and taking off the skid isnt that big a deal. And honestly, how often do you work on that stuff? I would rather sacrific the ability to work on the tcase and tranny, and have a beefy skid that I dont worry about hitting on rocks that I might have to pull if I have to do some work.
Take it as you will. I love mine, and would never trade it. yes, its not as good as a custom 3 link like URFs or some other kind of linked suspesion, but for a bolt on kit, it is for me the best one out there.
:jumping off bandwagon: