Another truck in the "too tough to need parts support" (Ok, I exaggerate a bit... :) ) would be the Tekno MT410. It is a Outcast-sized MT, so 1/8 SWB. But Tekno is another level of durability and quality above the already tough Arrma. The downside to a MT410 is cost - it is a full racing...
I'll grant you that Traxxas parts support is nice, but nicer is finishing the day without breaking the truck. If you like the E-revo, check out the Arrma Kraton or Outcast. They are built around a more traditional truggy chassis layout , which makes them much easier to work on. And Arrma...