I have two sc-10's. I raced all summer and I will admit, it takes a while to get a good setup and to get it handling well. Once you get it set up it is a very competitive truck if not the best.
But I see people saying they aren't the toughest? The other brands must be insanely tough because this weekend my friends and I race/bashed on a back yard large oval with a couple jumps and the only thing we broke after 8 hours of abuse was some drive pins for the wheels (pins that drive the hex's).
We beat the hell out of those sc-10's. We used to race T-maxx's and Revo's on the same oval and we could never keep all of them running at the same time.
Everyone seems to say that the Sc-10 is a race only machine and if you want to bash, get a slash. But I tumbled my sc-10 very hard probably 40 times that day and didn't break one part besides a pin (due to too much power from a mamba max pro and a 7.5T LRP x12 motor) and cracks to the body.
The stock bumpers flex so much that it just doesn't break. The only plastic part I broke all season was a front suspension arm and it was because I caught a piece of plywood that was being used as a wall for a jump. I hit it at full speed.
Edit: We were using a Brushless RTR sc-10, a Sc-10RS, and one FT Sc-10 for reference. They all are holding up the same. I absolutely love these trucks, it has revived RC racing for me and my friends.