Don't get me wrong, there is nothing wrong with the MM/8XL setup. You just have to keep an eye on things more than you would with the Quark/Neu setup. Besides, I don't know if you've ever had a vehicle that had 30 minutes of runtime, but I'm usually tired of driving before the battery gives out. The example that I posted before were under a race situation. Bashing shouldn't be a problem. Or racing for that matter. I'm just having trouble with the 30 minute mains and at this point, I'm wondering if going with a 9XL as a race motor wouldn't cure that.