I have never listened to the John Lee version, but Dotrice's Essos accents (Missundlei, 'Kuressy') were cringe-inducing, as was his take on 'Brayinne", and "Pee-tyre" Baelish. In the first two books, it also seemed like none of his characters could agree on how to pronounce Jeffry's name.

In books 4 and 5, his voices for established characters, like Arya and Tyrion also went off the rails pretty frequently.