When I put my Wrangler Silent Armor's on, my Goodyear dealer (and friend of mine) talked me out of the Duratracs. He said the SA's are quieter, better on the road, and almost as good as the Duratracs off road. I compared them on GY's site, and that's what they say as well. Plus, the SA's were cheaper.
I'm happy with what I bought, but I do know that most folks who bought Duratracs are happy with them as well.