I have recently come across a superb German cheese called (oddly) Montagnolo d'Affine. As for Brie, the finest I ever had was Sharpham's. Next best is Sainsbury's Somerset Brie which never fails to run everywhere. But Cheddar is the best. Sainsbury's are selling lumps of Wookey Hole cave-aged for £1.50. I've bought six lots.