Bus: more comfortable, more advanced with “not as cool” destinations, more legs per day, smaller bases and slightly more seniority. Also it has some small bases, ie LAX which means less flexibility to pick up or trade trips. The new 321’s will delivered starting around 2024 which can mean some awesome Europe routes, but that’s likely going to go senior.

73: old school, less comfortable (although more comfortable than my last plane), but more junior, faster movement, more growth, gigantic bases with island destinations.

Choose wisely!