John McCormack every time. He was once at a soiree given by some rich socialite with a taste for amateur composition and was persuaded to sing one of her execrable compositions, to the piano accompaniment of Sergei Rachmaninov. At the end, during the polite applause, Rachmaninov turned and whispered, "You zing Good zongz WELL; but you zing Bad zongz BETTER". So, J McC every time.