If you have found a good used diesel truck and the only thing you don't like about it is the mirrors, then buy the truck and address the mirror issue.
We use the McKesh strap on mirrors with the convex spots on both sides. They don't vibrate, go on and off in about 2 minutes, and give a great field of vision. We could have instead gone with Tundra OEM or aftermarket tow mirrors, but if we did that I would have to jack around with folding them in all the time to park in my garage. Every Day.
By using the McKesh mirrors we are only managing the mirrors when towing. These are purchase on the Hensley hitch website.