I think he has probably gotten the best balance: Kevin Conroy Crowned Ben Affleck as Best Batman Over Christian Bale Despite Hating His One Aspect That Angered Fans - FandomWire

Kevin Conroy once shared during an interview that he preferred Ben Affleck's interpretation of The Dark Knight more than that of Christian Bale's

Michael Keaton Isn't Jealous of Ben Affleck: 'I'm Batman, I'm Very Secure in That', Page 2

Reasons Ben Affleck Is The Best Batman

Michael Keaton Isn't Jealous of Ben Affleck: 'I'm Batman, I'm Very Secure in That', Page 2

Christian Bale, Ben Affleck, Michael Keaton, Kevin Conroy, and Adam West comment on Batkid

Michael Keaton Isn't Jealous of Ben Affleck: 'I'm Batman, I'm Very Secure in That', Page 2

Today I learned that if you combine the faces of Ben Affleck and Christian Bale, you get Kevin Conroy. : r/batman

Ben Affleck says his time as Batman was 'over too soon', and fans agree

Kevin Conroy Clarifies Ben Affleck Statements, Gives Thoughts On Joker Movie – We Got This Covered

Michael Keaton Isn't Jealous of Ben Affleck: 'I'm Batman, I'm Very Secure in That', Page 2

Batman' survey: Ben Affleck voted best Batman

Christian Bale, Ben Affleck, Michael Keaton, Kevin Conroy, and Adam West comment on Batkid