Dirt, you have silver through DL. this means you more than likely make connections in the ATL at least a dozen times a year probably? would you book anything with a connection of less than 45 minutes there (this is allowable through DL, you know)? Of course you wouldn't. 45 minutes in ATL would be like 30-35 minutes at CLT. my recommendation: get a platinum amex and book more lengthy connections and enjoy some time in a club lounge. or, better yet, take advantage of the discounted US Club pass going on right now