CBurnside,
If you do a review search on the Goodyear Silent Armor on Tire Rack or Americas Tire, you will get some good answers to your questions.
When I searched out tires, I remember reading multiple posts about the Silent Armors getting flat spots overnight and taking 3-5 miles to stop "thumping"
I narrowed my choices down to the Bridgestone Dueler Revo AT and the Michelin AT2. I wish I would have gotten the Michelins...
My main issue with the Revo is the decrease in fuel mileage and the perceived power difference that I now feel.
I dont mean to discourage your choice, just trying to be helpful.
Louis