No flame war here.
I had some of the Endurance tires installed last March and have put about 2000 miles on them. No issues and that includes sustained speed on UT and CO highways at 75 mph with a 9000lbs trailer. Good news on the Endurance. They are all new so no older date codes on them.
Good choice on replacing that previous set but I'm not going to bad mouth the Marathons. I also had almost 7 year old Marathons that got replaced which I had installed. But, mine were the USA made, before those tires got the over-seas designation. Never had an issue with the Marathons either.
Curious if there will be a pending flame war concerning the picture about balancing though ;)