I had to replace my Conti's on my '12 Outback Limited(picked up some screws too close to the sidewall, no one had any Conti's locally). Stopped by Costco, the only tire they had in stock to fit my '12 was the Michelin X. I had the X's on a prior '96 Ford Bronco and liked them, so I decided to give them a try.
On the 2012 Outback, they were the loudest tires that I have ever owned. I even took the manager of the local Costco tire department for a 18 mile test ride. He had over twenty years of tire experience with Costco, and agreed that they were very loud. We tried several different tire pressures and speeds with the X. He was shocked, so was I, as I have ALWAYS used Michelin tires. Since I only wanted Michelins, he ordered in some Michelin LX4's(?), which were quieter than the michelin X's, but still had a noticeable amount of road noise.
Both of my daughters have '10 Outbacks, both with original Conti tires, and unfortunately live 2500 miles from me. When they visit next time, I'll ask them if they can tell a difference.
I hope this helps.