I have had trouble finding the best cookie sheets. I've tried the
silicone liners and they warp during baking, making uneven cookies.
The black pans seem to make the bottoms of the cookies burn before the
center is even done.

I'd like to throw out all the cookie sheets I have now and replace
them with something that will cook evenly, not burn the bottoms and
not warp in the oven.

Any and all suggestions appreciated.

Pat