I have a few and love them! I think i got them from Williams Sonoma. The only thing is sometimes they get builtup oil residue on them and its really hard to get it off.
hahahaha i think my mind was in the gutter when i saw the title of this thread. or it could just be that i just replied to the rock of love tour bus thread, and i had boobs on the brain. hehe silicone muffin pan. that cracks me up.
but on to the topic at hand! i don't have the muffin pans, but i do have a silicone cake pan. it works just fine, and not as much problems with cake sticking to it. only thing is the cake comes out a little flatter than with a metal pan, because the silicone pan can stretch as the cake is baking. but other than that, i do like it.
i dont care for them.
you dont get browning or caramelization like you do with a metal pan. you have to use a reglular pan underneath them anyway because they are too flimsy. and they always feel "sticky" to me after i clean them, i dont know if it is oil residue from foods/grease or soap residue that is hard to rinse off.
i got a set for christmas one year from my MIL (it was a bundt pan, muffin pan, and a square cake pan) and i ended up donating them all to goodwill.
I got one for mini-muffins that are shaped like teddy bear heads for Christmas but I've been using it to make ice cubes lol >_< I have yet to actually try it for muffins...