You'll barely use DEF except towing. A full DEF tank is good for something like 7500 miles, not towing.Also, if you're not going to be towing long or heavy, I'd go gas personally.
I've never owned a diesel, but I can already see the quirks:
1) Needs DEF
2) Expensive oil changes
3) Not all gas stations have diesel
If you are towing heavy or long, the pros are:
1) Larger sweeping diesel pumps that some stations have.
2) Exhaust brake to hold your load going down hill.
3) Turbo for improved performance at elevation.
I filled mine 3 times when we drove out to the Rubicon and still had 3000 miles of DEF left once the trailer was unhooked.
DEF is annoying but it's not as bad as it seems.