Well, my totally unscientific are in. The 3M 1300L has a slight edge on the 3M 1357. On the rounded end I couldn’t get either one to lift. On the sharp corners I was able to get each started to pull up a bit, but it was difficult. When I took off both pieces, roughly half of the 1357 was stuck to the AL in patches, the other half to the fabric. The 1300L stuck almost entirely to the fabric. Very little stayed on the AL. That was a surprise to me, but that’s the way it turned out. Verdict is like I said the 1300L had a slight edge, but both would function just fine.
