I recently put the Hankook Dynapro ATMs on my wife's explorer right before we drove it to yellowstone and back. The tires seem very quiet for such an agressive tread design. We also hit some mountain dirt roads, (some of which had turned to mud). The tires performed great and seemed to clear the mud just fine. We never felt like we weren't in control. For the price, I am very pleased. Hope this helps.
Edit: I bought the tires from a friend that runs a local tire shop. He did tell me that these tires require consistent tire rotations, or they will quickly become choppy. I have rotated mine once so far and they are still perfect.