flaps 20 on 757, flaps 15 0n 727 on an engine out approach. No sim checks in over 9 yrs makes these numbers meaningless. Brain cells are meant to handle present day problems, not what age 60 rule said you couldn't fly an airliner any more but try to remember every flap setting you will never use again because you are too old.
I am not bitter about the rule because it was there when I got hired at 35. I just know what I know now vs age 35. Yes, I flew Lear Jets and Jetstars and tons of twins but flying for the airlines was the final learning process that completed my career. It makes you really take your job seriously.