If you want an off roader with a 4WD transmission, I would tell you to get the Kyosho Lazer ZX-5. Its the latest 4wd electric buggy made by Kyosho, using a shaft driven system very similar to the TC3's system. You only need a set of Titanium screws made by speedtechrc.com because the stock screws are piece of trash. Here's the buggy:
http://www.speedtechrc.com/store/ebp...il.asp?id=5494
If you wait a bit longer, Tamiya will release their ultimate off road buggy ever. Its name is the TRF 416X, as I've heared. It will have a shaft drive train with double deck chassis and ofcourse the famous and beloved Tamiya quality derived from their 415 touring car and the TB Evolution series of touring cars.