I'm on the hunt for a leak-proof mug with a stainless steel interior. I would prefer it had a handle. I'm not to big on the Trudeau brand of mugs only because I have had 2 mugs before that the seals on both of them didn't work--at all. I have looked at the OXO leak-proof mug and actually bought it only to find out that it cannot be cleaned properly. I do drink my coffee with cream and sugar (sometimes milk instead of cream), so not being able to properly clean my mug would probably result in some nasty biproduct.