Everyone who has had ST tire failures, has their own personal experience about what brand ST trailer tires they trust. Been there and had that.
Here are my three, not in any particular order.
Carlisle Radial Trail HD. (and only this specific tire which was redesigned over the older ones)
https://www.carlislebrandtires.com/our-products/product-detail/radial-trail-hd/Maxxis M8008 radial trailer tires.
https://www.maxxis.com/catalog/tire-122-129-st-radial-m8008And the Good Year Endurance you mentioned.
The Maxxis has a 65MPH speed limit. The other two are speed rated higher. Not that I endorse towing a trailer that fast or faster. just noting it. I only trailer tow at 60mph regardless on my travel trailers. Things can go real wrong way too fast when towing a trailer.
The Carlisle will most likely cost less then the other two.
5 years is about the limit on ST tire age. The rubber breaks down not even using the trailer. They may look good, but you heat them up, and the aged rubber issues rear their ugly head. Keep any of them covered with white covers to protect them from the sun that 95% of the time they are sitting outside doing nothing and keep them aired up to max cold side wall pressure when towing. The tandem axle setup needs the pressure to help ward off interply shear in the tire during turns. (the tread trying to tear off the main carcus scrubbing in a turn)
Hope this helps.
John