Ok guys, what kind of rear blades are you using on the GC series. 4'-5'-6'? How big will it handle? How big is to big to be handy? What should one be shopping for? Any features that are important? I doubt the 5hp/ft rule applies to these like tillers and rotary cutters. What do you use them for other than snow? What application would these be used for with dirt and would a box blade be better?