SBR only issue we have had with it is the stock Steering Servo sucks needs upgraded to 1/5th.
It takes a heck a betting from my 11yr old for the last 6 months in the desert and has not broke anything yet, ant he sends it 6-8 feet in the air.
No history with the RC8 other than the track time and they seem very tough.
PSSS.... the SBR is a blast to drive way different than our full independent race cars.