-Going to move to a base? then pick AA because our bases rock. CLT, PHX, MIA, DFW are great places
-Going to commute by air? then pick AA because we dont require 87 backups to get to work. 1, and it can be offline.
-Coming from the military and want a more relaxed atmosphere? pick AA. Just looking at those hat wearing sub commanders makes me feel sorry for them. Delta pilots look like the complete opposite of our Miami guys who run around with no tie or blazer and are super chill while also being the best pilots you will fly with.
-Don't want to say "wind check" every 10 seconds on final? come to AA because we realize the wind is what it is and it doesn't matter if it is a 8kt crosswind or a 10knt crosswind.
-Worried about debt and the future? Look at the silly number of old airplanes Delta has.
Delta: A220's, A320 family, A330's, A350's, B717, 737's, B767 family. 7 types.
AA: 320, 737, 787, 777. 4 types, that's it.
Delta is going to be in debt way past 40B soon and AA will be way under 29B soon.
-Want to drop to zero? come to AA. Want schedule flexibility? come to AA, the IMAX army will take your trips.
-Want crew meals? come to AA
-Want Sick if needed? come to AA
-Want amazing seniority progression? come to AA, hiring 5K pilots in 2022/2023. 5K! crazy. Go to Delta if you want to be behind a bunch of 25yr old former regional FO only pilots who got hired 3 years before you.
-Don't want to have to get a doctors not if you call in sick? come to AA.
-Want to complain about your employer or listen to cpt's tell you how great TWA was then come to AA
-want to be apart of a dysfunctional union? come to AA
-want to work for the soon to be CEO of AA who seems lost every time he speaks? come to AA
-AA is getting a contract in the next few months with profit sharing and other improvements.

Anyways do what you want but as someone who researched Delta really hard in the last year I wasn't all that impressed.