What button do you have your melee bound to?

Keyboard here. I've seen all of the high-ranked Magik players utilizing her melee a lot, in between her LMB swings and as a finisher, but I'm struggling to actually get used to doing it because of the lack of a comfortable melee button placement that would flow with the rest of them nicely. Both the default V and Mouse4/Mouse5 feel to janky for me, do any of y'all have other options you use that you could suggest?