CLE is clean enough, modern enough, and for the most part easy enough to get in and out of. For some reason my Continental gate always seemed to be located in the furthest possible corner of the airport, but given that it's never particularly crowded at least making my way over there in time was not a problem. I've never had any hassles and any airport that lets me consistently show up an hour before my flight and easily walk onto the plane on time - without having to sweat it about making it through lines, shuttles, confusing terminals, etc. - gets an a-ok from me.
In other news, dining choices (especially quick quick eats) definitely left a little to be desired.