These pans are great. I purchased them two months ago and the results are fantastic. Can be used for multiple purposes. Easy to clean and they work like a non stick pan. Performance The cookies that I have baked on them bake evenly. The divets in the pan allow air to get under them so they all cook the same. Ease of Cleaning I have had many baking sheets in my time as I am a very big baker. These clean so simply that it is great. All I do is put them in the sink run hot or warm water and wipe them clean. I have yet to had to use brillo. A scrub type sponge works fine. Durability They have held up well. No scratches or dark spots on them. Design Like them because they are larger than the standard sheet. They hold many more cookies and I made a sponge cake for a jelly roll and the pan worked out well. Doesn't Stick So far to date I have had nothing stick to the pan. I have no made something very sticky on it as of yet but I seem to think that a spray on the pan would work well.