I gonna invest in that oven thermometer. My sister did a batch of cookies recently which went wrong with her table top and her seperate therometer registered 40degC higher than what it was set at..ouch!! I think with advice from lucky cat and the Brit who have worked successfully baking with the tefal the Darth vader wins momentarily. Has anyone worked with the 28L De longhi EO3890A? How about Kenwood, saw it at Fortress.