Ed
I was a little hesitant about the 100 load rating, since the 4door explorer is 5280 lbs, so I did a search by tire size instead of by vehicle, on that same site. (Thank you for the site by the way, I had not seen it!)
225/75/15 pulls up yet another Michelin LTX M/S SL with a 102 load rating for $94 shipping incl.!
the 100 would probably work, but the 102 will give a little more strength without going the $115 dollar route.
I think I am sold on the Pirelli Scorpion A/T's. They are a little less and might be worth a look for you. I read raving reviews on Tirerack feedback, with some noting tire wear as (the only) drawback. I am very partial to Pirelli.
A contractor I worked with (I inspect bridge construction projects for my job) insisted that the Michelin LTX M/S was the best, and when they bought new vehicles they would immediately invest the $600 to put them on! They did thousands of miles per week, plus offroad all day in all conditions! You can't go wrong there either!
Rob