I have a silicone pan that makes mini loaves. I use it to make specialty quick breads at the holidays for gifts. The pan is about 13x9, but it makes 6 loaves (for size comparison). It was not cheap, but I couldn't find a mini loaf pan in metal so I gave it a try. It works wonderfully, actually. I've never had anything stick and it always cooks perfectly! Clean up is a breeze, too.

I have no idea how it would work on something larger as my loaves aren't all that much different than say 'texas-sized' muffins. I should also mention that my holiday breads are so rich, that for three of the four recipes I use, you don't really need to grease the pan even when using metal, so they may not be the best gauge of non-stick-ness.

I do have a silicone rolling pin and while clean up is super easy, I don't love it in use. I do love all my silicone utensils though.