AB vs 737 debate #21,302 on this forum...
It really comes down to what you value more:
-If you value comfort, a quieter airplane, and/or a more automated airplane, then bid the Bus
-If you value quality of life, fewer redeyes, more seniority (resulting in getting a line sooner), better trips, lower rates of reassignments mid-trip, and flying a less automated airplane, then bid the 737
For reference, I fly the 737, I'm relatively junior system-wide, I'm based at home (non-commuter), I'm in the bottom 10% in base, and I hold a line with an average of 16+ days off per month. I have NOT flown the bus, but I have sat in dozens of bus jumpseats - the bus is more spacious and a bit quieter as others have attested, but I also come from over a decade of flying RJs, which are MUCH louder and more cramped than the 737. I'm happy where I am, and I don't plan on changing equipment until I get awarded widebody flying or upgrade.