I use a silicone baking mat all the time - for cooking and baking. It's become an essential tool, which replaces parchment paper, and I use it as a non stick sheet for transferring dough and pastry. I use mine almost everyday.
Silpat has always been my brand but over the years they have become more and more expensive, which has become hard to justify. As much as I love Silpat I came to realize it was more the product, and less the brand, that I loved.
So I found an alternative, which has become an excellent replacement, for way less money.
To me, that's good value. But does it work? See for yourself in this head to head video.