Which liberal Supreme Court justice would you say was the least bad, in your opinion?

I would personally say either Douglas or Earl Warren, obviously, I disagree with them on number of things, they were liberal after all(though Warren was a liberal Republican), but on some things like upholding worker's rights and protections and upholding the Civil Rights Act under the commerce clause, and some constitutional rights(Miranda etc), both had many good decisions. Who would you pick?