Some smaller airports I've visited in the last few months that are nice, are
Corpus Christi, TX
, and Midland Intl MAF
Both are fairly new, or completly rebuilt, and spacious and clean.
Both Use 4 active gates (but have room for like 6 plus expansion)
Both see Southwest, Continental, and American- and I think Delta and or United at one of the other.
I even flew into Mid America-Stlouis in November on Great Plains, before it went up, and that was a clean spacious small airport (though no real shops or food).
Ciao, and Hook 'em Horns,
Capt-AWACS, Yankee Air Pirate