I am in the planning stage for developing a rover based on the Wild Thumper 6WD chassis. I believe this is the best platform for the money for anyone working on a wheeled rover type of robot. I am waiting on finances to improve before buying a WT, but in the meantime I am researching what others have done and I am obtaining sensors and other lower cost items.
I am looking at using the Parallax Propeller processor with 8 cores, but I am really seeing lots of good things being done with various Arduino boards. Also, I have an mbed and that is also a very capable processor. If I go with the Propeller, I will likely select the SPIN language to code with, over C/C++ just because of the shorter learning curve and due also to the large code base.
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/geologic-inspection-rover-with-wild-thumper-6wd-chassis