I purchased the Dueler A/T Revos and I could not be more happy with them. They are amazing on road, great ride, really impressive in the rain and they are really quiet too. When I was up in the mountains a few weeks ago, I drove on some really crazy curvy roads and my XJ fully loaded down with camping gear handled like a sports car in the corners, I couldn't believe it. Also, I can't believe how nice my XJ rides now. I havent had them long enough to comment on the tread life. I have only had them off the pavement a few times, but they have done very well so far for A/T tires--much better than I expected. I was playing in the mud left over from Ivan last week and I was really impressed by how well they gripped, i didnt even need 4wd. These are by far the best tires I've ever had and I can't say enough good things about them, they make my old Yokahama Geolanders loike like terrible tires and I didnt think they were that bad until I put the A/T Revos on.
Another plus is that I got the buy three get one free deal so the price for four tires mounted balanced, tax, etc with road hazzard was only a little over $400 for 235/75/R15s. I want to buy some for my Frontier now if the Michelin LTXs ever wear out. I really hope these A/T Revos can wear like those, the Michelins have 40K on them and still look almost new.
I hope that helps