county.
simple brick of an engine and box in the suzi varient, and will tolerate the most abuse of the lot. Not that much between a stage 1 3.9d and a county suzi on that front admittedly but then the county is that little bit newer and has the later suffixed box in it in the later years.
That said.
in reality I'll take anything thats listed its only a minor change in driver technique and in stock form theres not that much between them.

