How much effort do you put into making memorable NPCs?

>>54177464
I just try and make good NPCs, and leave it up to the players as to whether or not they're memorable.

I've realised that trying to create memorable NPCs is a waste of time. I give every NPC a basic personality, a quirk or gimmick as a basic hook for them, and see who the PC's click with. If they get interested in person, they get fleshed out and expanded upon, if the PC's ignore someone I'll let them fade into the background.

Once a character has become popular with the group, though, I'll develop them and link them into the story to give the PCs more things to do with them.