I only have 1 1/2 acre. As much as I would like the 60", it is way more mower than I need.
Why? 60" would be great for that size of yard. I have a 54" just so I can get it through the gates in the backyards of my rentals. If it was just for my house, I'd have bought the 60". And if I was buying today, I'd bring home a full blown commercial model with a 72" deck.
I have a 2010 Hustler Super Duty w/ 25hp Kawasaki.