Silicone Bakeware?

I need some new bakeware and have had my eye on those new silicone ones.
Does anyone have experience with them?

They look okay, and I like the idea that they don't burn, but how do they hold up when you have to remove the item from the oven? I picture them spilling all over when you pick them up. How do they hold form? If I have to put them into a regular pan anyway, it may not be worth the trouble and expense.