Our last roll of 3651 clear has some random black specs embedded in it. 2 or 3 rolls of 3M IJ180c V3 ago, there was a whole intact fly trapped between the vinyl and the backer. Print, laminated, and installed it, and you couldn't even tell. I hate working with clear vinyl, its so hard to color match and the tiniest imperfection shows.
3105ht at least isn't being made in USA due to covid hitting the plant hard.... So they're bringing it in from Germany now. I imagine other vinyls are the same.... So a much longer way to travel, which means more dents or crushed boxes.