the ls10 is just too old and hard to find parts for. plus the small bearings constantly need replacing. I have one I don't need but just wouldn't feel right selling it to an RCM member. Ebay no problem
crt.5 is just plain tough, and the traxxas, is, well traxxas.
the hyper mini is also a great truck, if you haven't, check out the mini truggy section here.