???? I have a 4wd and its not much different in laptimes etc as a 2wd, so either is fine.
there just as good as each other. and nationally both are raced and at club level it makes no difference which you run.
Personally I just prefer the 4wd feel. in buggies and SC, and as the laptimes show. on many tracks(SHRCCC for one) there is little/no difference or advantage/disadvantage in either.
some tracks actually favour 2wd so make you OWN mind up what wheels drive and go for what you feel.