The Tire Rack - Your performance experts for tires and wheels has a lot of good comparison data too.
After doing some homework and driving in some sloppy weather recently I discovered that the kumhos aren't as bad as I thought they were. Sure they're a tad noisy, but they're not as loud as they could be and provide decent traction in snow (mind you, other than a very expensive all-season or snow tire there aren't many other options in the 15" range, and even less in the 17" range you're looking at).