Personally, I'd favor racing 2 wd electric stadium truck because you just flip a switch and go. Nitro engines require tuning and typically an assistant to help. If they allow brushless lipo electric stadium truck, you would have a vehicle you can simply take out of the box, set it down on the track and race. For me, less hassle makes it more enjoyable. As for the 2 wd learning factor, it takes more throttle finesse, but that's part of the fun. If the electric rules require nimh batteries and brush motors, there is more work and expense, 2-4 packs of batteries, charger, discharger and equalizing tray, possibly your own comm lathe.