I purchased two Teflon pressing sheets which I used several times. I heard about the parchment paper and purchased a box to try. I must say I much prefer the parchment paper. I'm still using the first two sheets so they do stand up with usage. I've had no problem seeing the applique between the two sheets when bonding applique sets and I always use one under the fabric and one on top of the applique piece when bonding to the background piece. Another advantage is you can the cut the size to your liking.