Saw Unearth on Mayhem Fest and they were amazing. Then saw Molotov a week or so later for the 2nd time, so I could pass up this show I guess, though Skeletonwitch would be awesome. Haven't really listened to Chimaira much.
Chimaira is amazing. I've seen them 16 times live, and will be hitting up the Christmas show this year. Sucks that the Cleveland date isn't a part of this tour, because I heard Unearth is good live, although I never really got into them.