The experience will vary widely station to station, day to day. Not all clubs within a given airport will offer an equal experience, with DFW being probably the best example. I've had great experiences at some of my least favorite clubs, awful experiences at my usual favorites, and everything in between. Most folks like the new clubs at DCA, LGA, DEN, and SFO, everyone equally hates the clubs at PHX, CLT, MIA, MCO and PHL. Most of the rest offer a mixed bag.