Tires question

So I had my first blowout last night on the terrible stock Trail America tires. I got lucky, the center rib flew off (and part of it hit the roof of my truck somehow) and we were able to drive one mile to a parking area in the middle of Montana. My trailer was manufactured in 2012 and I bought it in July of 2013 and it has less than 5,000 miles one it. My first toy hauler I bought new in 2008 and sold in 2012 and the LT tires that were on it looked brand new when I sold it and I had probably 8,000 miles on them. (I do NOT want an ST vs LT debate, I understand the differences) I have 70,000 on my truck tires and they are 5 years old and they basically look brand new, I will probably get 100,000 miles out of them easily (it is frustrating trailer tires don't even get 5,000 miles)

My toy hauler is 5,200 dry with a GVW of 7,500. I am going to go up in load range and such for excess capacity because that is how I am. What I am looking for, does anyone know of a brand of tire that lasts longer than others? In my reading, I have read good things about Maxxis. Most of my trips are 10 hours at a time and in the summer temperatures are often over 100 degrees with elevations over 7,000 feet (which changes tire pressure drastically), and the speed limit is 80 (no I do not drive that fast, but I like to go 70 so I am not that far off the pace). I just want a tire that I do not have to worry about in the next few years. I might go to an LT tire so please include those recommendations as well.