I'm loving mine, so consistent and never bites you back when trying too hard. It felt a little on the numb side with the plastic chassis and battery brace. I put the red springs on the front with the 2 x1.6mm pistons which stopped the front collapsing when cornering hard. I put the carbon battery brace on and it was a lot sharper. I've just bought the alloy chassis but haven't ran it yet but stiffening the chassis just seems to make it better without affecting the balance.
One thing which amazes me is the amount of traction it has compared to other cars. It always makes me smile.
As for quality it is far superior to TD and Associated. People complain about idler gears but the way to stop it is simlpe......RTFM. Don't go beyond the slipper setting in the manual otherwise it won't work and all the shock is transferred to the gearbox.
I can't wait until I get the new BMAX4 if this car is is anything to go by.