Game is live 1-3, very loose, effective stacks $500, 8 players.
Hero has A
5
in late position.
Limps to button who raises to $23, 4 callers, Hero calls,
6 players see flop, pot is ~140
Flop: A
9
5
SB checks
BB bets $125
(Button mucks out of turn)
Folded to Hero
What's the most EV play, assuming BB will call a shove 100% when he's ahead and maybe 1/2 of the time with a good flush draw, strong ace or other trailing hand?