you cant have both good rear grip and steering at the same time. You need to sacrifice your steering for some grip or vice versa.
from the list of current top 2wd, the order for rear end grip goes
losi xxx-cr
kyosho rb5
AE B4
nothing has more rear end grip than the losi! Most times you need to set the CR up so that you want to get rid of rear grip so the car will turn
