I only had a short stay AAL, but I thoroughly enjoyed my time there. I've now have been at DAL now for 7 years and I'm extremely happy here. I haven't seen all that many of the stereotypes I had always heard about DAL..then again, I'm not based in ATL lol. If I had lived close to any one of the AAL bases, I'd have happily stayed there. Either one would be a great option, so pick whichever one allows you to sit short call from home, or has the easiest commute.