The cliche I’ve heard is the Dutch. As in, the Dutch speak English better than most English people do. But the English of most Western Europeans is exquisite.
Brian Collins, didn’t you just post somewhere that Norwegians speak English like Canadians with funny consonants? Ah yes: Brian Collins’ answer to Do you think Norway is more Americanized than most European countries? They use no dubbing on TV, have more American brands present than in France, Germany, or Switzerland, love big American cars, and the society is heavily reliant on driving.