Mark,
I actually wanted the 60" so that my tractor would only have one width. 60" MMM, 60" FEL, & 60" rear blade. Yeah, I know all of these are a little small for the tractor, but I I to go with my limiting component which was the deck, since I needed that to fit in the shed. The reason I wanted one width is that I live in the woods, and if the front or rear of the tractor fit through a hole, the rest of the tractor would also fit. The 68" does cost more, so it was a toss up for me. I told the dealer about it, and he looked shocked, so as not to ruin his day, I told him I would keep the 68". Given I have the 68" FEL, I wish I had a larger rear blade, maybe I'll trade it in.