I have started shopping for a daily driver. I've decided to keep my old 7.3 Super Duty instead of getting a new one, and get a coupe......."
so the old American iron is not a consideration ?
What part of the country do you live in ? How much winter you have to put up with might be an influence on the decision.
You are asking a bunch of not quite normal people for opinions on a personal type decision. I don't know how useful these replies will be beyond entertainment value. For example, up to last year, my daily drivers have all been Classics.
In one of the nations worst cities for traffic, Austin Texas, I drove a '66 Ford Mustang GT fastback for 6 years as my daily driver. It was 100% stock with an automatic C-4 and A/C. It was one of my best daily drivers ever, in over a 50+ year span of being a licensed driver.
Also had '66 GT-350's as daily drivers, '66 Ford Galaxie 2 door hardtops, and a '67 Ford Mustang GT Coupe. All of those in recent times. In the past my daily drivers were a couple of Jaguar e types, and several TR-4a's . I took all of those cars everywhere local, and numerous cross-country trips as well. Never any issues with reliability or safety. In fact, up until January 2018, I've never even owned a car for a daily driver that was manufactured after 1973. So if you are tough enough, or crazy enough, going for the old iron is completely do-able. Do it while you still can.
In deference to my advancing years and crumbling joints, I finally went modern, modern by my standards, and now my daily driver is an '02 Jaguar XRR. Probably too fast for my old reflexes.
Z