I pulled the trigger on the Toyos. 295/75/16.
First, they look great. The "extreme" sizes have some pretty huge lugs and void space, especially for an AT.
The ride quality is a huge improvement over the 285/75/16 8 plyBFG KOs. Granted, the KOs had 60k on them. I expected the ride to be harsher on the 10 ply Toyos. They feel much better in the corners and seem to track straighter on the highway. They also balanced with little weight.
Mpg has stayed the same, adjusting for 8%, according to GPS.
The KOs did wear like iron (60k miles). Sometimes they drove like iron, also. But they definitely deserve their reputation for durability.
After two weeks of mostly highway driving, I am extremely happy with the Toyos. They were great on the few backroads they've been on, too. Nothing interesting, just some dirt, but the ride was better there , too.
I'll check back in after a rotation or two.
Thanks to everyone for the great info and opinions.