The debate should be between the Nitro evader and the rustler. If you want Quality parts last longer and off roading go with the Ruster. If you want lesser quality but 4 weel drive for better traction and speed (racing in particular) get the nitro evader. I have both and dont notice a tremendous differnce between 2 and 4 wheel drive. The rustler has better quality parts and takes more of a beating but the evader and spares are cheaper price. It's all a matter of preference and wether tou plan to race or bash.

p.s. The rustler will smoke the others and leave them in the dust if you'r looking at the 2.5R version