I've barely watched English dubs so I only have a few to mention but I agree that the dub for Yu Yu Hakusho was better than the sub. They really brought the characters to life. Other than that, I remember when I first started watching anime that the dub for Ouran High School Host Club felt very natural and well done. I've never watched it subbed but they did a good job.
I can't speak for the actual anime as I haven't watched it in dub yet but the bloopers for the Ace Attorney dub are a goldmine. I have never laughed so hard in my life, the dynamic of the cast in the bloopers is perfect. Bless the VA for Phoenix Wright. I might start watching it in dub just to appreciate the actual voice actors more.