Wow, I was looking completely in the wrong section. Thank you! Btw, thanks for all your contributions to this forum. I've been a forum lurker for a while and got a lot of things answered by you just by searching.
I'm cutting Lumina 2100. Its behaves somewhat like oracal 951, but it does seem to "self heal" when cut, which makes it especially tricky to weed small text. Single pass is fine majority of the time, but double pass helps immensely on small text for what I'm doing at least. I think because it's sort of flexible and has a sticking effect to itself when cut. My theory anyway.