I'm on my second set of Cooper AT3's. I've been real happy with them. I got about 50k out of the 1st set, and I've got about 40k and still going on the second set. No issues with them, and I'm horrible about not rotating them.
They are made in the US, and that is a big plus to me.
I've also got a set of STT Pros on a jeep, and they are some beastly tires, but ride amazingly quiet for how aggressive they are.
Cooper did get bought by Goodyear last summer, but my tire dealer says it has not changed anything yet.