Jim,
Responded to you PM. Feel free to ask away as you continue your search. I'm happy to share whatever I have learned as we go along.
I have to put in another plug for the Nokian AT Plus tires I put on. My Michelins were toast after three years - lots of sidewall cracking. The Nokians ride well, are not real noisy and are rated for 3,750 pounds which gives me 500 pounds for the pair over the Michelins at 3,500 on my 20" wheels. As anyone with 20" wheels knows, tire selections are limited - getting better, but still limited.
Shawn