I went Delta once and it was more than a year ago...so any info about them wont be worth squat.
but the bottom line is.....the number of flights available ...so you can fit it to your schedule!!!!!!!!
the prices were always the same or lower with AA than all the others...evenm the JETBLUE flights with their outrageous hours were more money than AA EVERYTIME I punched in my dates!!!!!!!!!!...and they offer ONE flight each day JFK to STI.....it was 11:55 PM!!!!!!!
as far as customer satisfaction..it is like cell phones everyone hates all the carriers they just hate one less than all the rest.
price and availablity...after that...maybe you worry about being late, or your luggage....heck you arent on the plane long enough to make it a big deal.....
good luck
I fly AA all the time now...just because i have been building up miles with them....but i wont fly them if the other guy has the times i want on my dates and they save me $75 to $100....less than that, I like all the knowns i have going with AA...the terminals, the gates, the cutoff times...the personel at STI!( which are reall great)
bob