Nitto has their new Trail Grappler out in 315/70, specs show 35" tall. They look to be in between ATs and MTs.

 

Cant speak for the mileage, as i have run them along with another set of tires and didnt keep up with alignments and rotation. Under correct circumstances i should think 30 - 40k+ mi would be an easy expectation.
I want these for my replacement tires on my stock 17" rims...

http://www.treadepot.com/sizes/rvmt.html

 

I have the Nitto Terra Graplers 305/75R17, on H2s. i havnt towed heavy with them yet but they take car trailers with my jeep and my 20ft bumper pull Rv well. i have had them for about 5k miles including a trip to Oregon and in the snow and all in all i am very pleased for an AT. plus they look good.

 

I love my Procomp Ext AT's. I have only had them for a couple months but they still look new and have a 40k warranty. When I was shopping around they were the cheapest thing going. The tread lugs are HUGE. They look way better than my friends bfg AT's.

 

I saw a cool looking new one the other day. Good Year Wrangler Authority A/T Don't know anything about it, but it looks good for an all-terain.

 

I have 35x12.50 17R Cooper STs with over 50K on them laying down the cash Monday for a new set