Who is the best AC/DC singer?

I'm curious to know, in your opinion, who do you consider to be the best singer in the iconic rock band AC/DC? Is it Brian Johnson, who brought that raw and powerful energy to the forefront with his distinct vocals, or perhaps Bon Scott, who laid the foundation for the band's sound with his charismatic and energetic performances? Or do you have another member in mind who, in your view, deserves recognition as the band's best singer?