my office splits evenly on Airtran--the delta partisans (we fly ATL-TPA) like the more frequency, but the Airtran partisans prefer the less cattlecar atmosphere (ever gotten off or on a full L1011 at TPA---not fun!!!). Bus class seats on Airtran are very comfortable--firm and unworn. If you have the slightest reason to avoid Delta you'll be perfectly fine with Airtran.