I just posted on another thread - I use neither, I bought teflon baking sheets from Amazon instead. They aren't sticky on the back but they're larger than the biggest supreme slider and about 1/8th the price. I covered most of my sewing table with them; I taped them down with Gorilla tape. Not pretty, but extremely functional! I cut out a square so I can remove my plate without having to un-tape anything so there's a fairly large square that isn't slippy but that doesn't seem to make a difference - I love how my whole table is slippy, my big quilts move around much easier now.