I have a new dx31, basically the same tractor with 4 less hp. I really like my tractor, haven't got to use it on plots yet, will be in a few weeks though. I guess it kind of depends on how you plan on using it?
If you are renting, are you renting all the attachments also?
I have a Ford 1715 that I bought new in 1992 and have used for several years now. In my mind perfect size for food plotting. Small enough to turn around in tight spaces especially with a tiller. I also have a 6' disk and it pulls it with no problem. Runs like a champ and is good on fuel.