I agree with the previous poster who said it is going to depend on your property/terrain and whether you can get a 60" through. I went from a 54" to a 60" when I bought my first Kubota six years ago and stayed with the
60" when I got my new one this year, also got a 62" on a John Deere 2305. You would be surprised at how much quicker you can get a large area mowed and I have not had any scalping issues with the "self-leveling" deck on my Kubota, but I mow at 3" so for those who mow closer, it may be an issue.
I like running my machines, but I am all for something that will get the job done quicker so I can go on to other things; for me the 60" works well, but check your yard to make sure it will fit or you will wind up using a push mower to trim and 1*I don't even want to think about that.