We mainly have Tekin's already and still use them in most of our cars. I have a LRP Quantum that we borrowed for the Nationals last year and as I went over one of the jumps the cases seperated and allowed the speedy to land on the battery and blow the fets allowing the car to rocket at full speed into some poor person's knee leaving a deep cut so we were not to impressed with the ease the cases seperated. To make it worse there is nobody able to fix the LRP speedy in Australia that I know of. We have 2 G10's already. What is the difference between the G10 & G11,and then between the G11 & G11 Pro.