Is having a " turbo" or " maxtoque" gearbox head on a trimmer worth spending the extra couple of bucks? For example: I was looking at the Maruyama B27L series trimmer. The Turbo model ( B27L Turbo) which is 1:9 gearbox on it is only a few dollars more. Being a 25cc motor, is it worth the extra few dollars? Considering too that I mainly do light edging and brush cutting ( farm-work and 3 accounts)