PBS absolutely sucks unless you are senior. Lived it up and down 2 seats over 12 years. The sales pitch is “look at all the options you have available to choose from” then watch as the top 15%ish can actually hold what they choose… it’s an illusion of control by offering lots of choices. The junior get scraps.

Southwest has Elitt which is very effective for junior people if you keep at it. I would argue that the schedule flexibility at SWA is among he best in the industry once you get off of reserve and Elitt is accessible