And don't listen to THX, he talks a lot but obviously doesn't know what he's talking about. I doubt he's ever had a RS10.
In the year that I've had mine, I play with it probably 5-6 days a week. It's built pretty tough for a beginner crawler right out of the box.
I have never broken an axle shaft, C' or a knuckle.
I haven't had the need to upgrade the axle gears.
The servos are kinda weak, I've had to replace 2 of them in a year. $30 over a year, not bad in my book.
ESC that will hold up past your living room carpet? I run my truck hard every day and it's still on the factory ESC, never had any problems with it.
Replace the motors with ones with some ability for torque? I can pick my redcat up by the front two tires, hold it in the air, and have someone hold the throttle on the remote and the thing will start doing flips while I'm holding the two tires. It's got torque and everything holds up to me doing random things like that.
Pinions and teeth that will be there after one battery cycle? I can't even count the amount of charges I've ran on my truck on everything stock. Like I was saying, 5-6 days a week for about a year. Hard stuff, not just stuff in my back yard.
In the year I've spent $30 to replace two servos, everything else has held up like a champ. No broken axle shafts, no broken knuckles, electronics have held up. It's a good rig!