One airport I have never, ever had a problem with any sort of attitude or nonsense is ROA. I have, however, witnessed nonsense there a couple of times (ther BP checker handing SSSS people a little tag to carry through the WTMD with them, which would cause it to alarm, for instance--what kind of "logic" was that?)

Most of the small airports I travel to seem to be that way; the screeners are "more connected" to the passengers and seem to want to do their jobs well yet remain pleasant, whereas those at a large airport seem to just want to do a job (and not do it well, either).