preflop monster vs very aggressive opponents

[Kevinho_]

hi

lately i have thought alot about what is better in following situations:

I raise in CO/BU with AA/KK and BB 3bets me as he does very often
is it better to just call and raise the flop because he likely has a hand he would fold to a 4bet or is a 4bet the better choice because we get it in with the best of it for sure and pick up a decent pot and send a message that he cant 3bet all the time because we play back at him

same thing for if we are oop like SB vs BB
i think i tend more often to 4bet oop but actually im 4betting my AA KK nearly always anyway

so how do you guys handle big hands preflop against loose 3better?