Hello Mr. Schuetze,
I have seen a lot of 6 wheeled robot and tank thread ones for the past 4 years. both of them are effective. but if i was given a chance i would go with threads, just because of my experience. In reality, tank thread bots has a lot of traction and at the same time, no turning problem.
if you do need to know about tank threads my suggestion would be Contact few teams who has done it for a while. For example, S.P.A.M., Cyber Blue. You can sort their members out on cd by going into the member sectioin and doing an advance search with their team number. good luck...
