Charles Krauhthammer. I disagreed with almost every opinion he had, but respected his intellect and writing. Sometimes you need to listen to those you disagree with.
Agree completely with PH. Even though I disagreed with a lot of it, he was a fantastic writer. Especially when he would do a column on sports. Interestingly, as a staunch conservative, his most recent columns were very anti-Trump, and made for fascinating reading.