I'm looking forward to getting rid of my 3/4 ton dodge, with a newer chevy 5.3.
With your short commute, a diesel would not be a great idea, IMO. The whole diesel price being 30-50% more than gas sucks, too.
If you are getting a michigan truck, get as new as possible. 90s dodge = rust. If not now, then soon.
Now, if you needed a 3/4 ton, then get a 3/4, and then you start looking at diesels, for sure. But 90% of the board probably does just fine with a 1/2 ton, and for the ~half a dozen times a year that most people tow heavy loads, you drive a little slower.
With the prices in the market, there are a lot of really nice 2-5 year old 1/2 tons out there for the money.