it is definitely not the radio. I used to run a m11 and then I got tired of holding what felt like 50 pounds for 30min- 1 hour at a time. I switched to the dx3r with jr9100s and lipo receiver packs and I swear it seems like the wheels are turning on the car before I touch the steering wheel LOL. The radio is definitley as fast or faster than your m11 in my opinion. I personally drive mugen mbx6, mbx6t, and losi late model and I absolutely love my mugens. If they ever come out with an 1/8 scale nitro late model oval car, my losi will be on here for sale but oval is not as popular as off road and certainly not as much over seas so iI dont see that happening anytime soon. The mbx6 is a very stable car with the right setup and I have heard that d8 can be as well. But if you spend all that money on the lightweight parts then it will be just as expensive as the mbx6 in the long run. Remember, you get what you pay for.