[arceye]

Just bought the xb2. Run on medium/ low grip carpet most of the time, but have run on bare sports hall floor (with gear diff) Let a lad who runs a yz2 have a go (A finalist each week at my club) he said its lovely to drive, more stable at the rear and turns in a bit better on the carpet. Can't vouch for astro yet or high grip carpet where I imagine the differences are less. But on that, u can change all the plastics to the harder compound to improve the drive.