Yeah... But I have been thinking alot.... I know...
When cutting a small tree nusury, I like the fact that if the tires don't hit it, it does not get mowed.... My MX5 is great for this. Long of it, this would not be for my lawn. I might mow an acre of it, but not much more due to not wanting the weight or the tracks on the "nice" part.
So..... Yes the 72 would be nice..... but for the price difference, and the fact that I would have to look back more often, I think the 60 might work better.
Hmmm, you know you will get used to the 72" pretty quickly and it probably won't be as much of an issue as you might think. I got a 72"MMM and it seems that my tires run over stuff and my mower misses it! LOL! But either RFM, you gotta be careful when turning