Thanks for the reply everyone. so it looks like 2 are ok, but 3 had trouble.
I wonder if there's anything that they do differently (maybe sanding down the dot matrix does something?) vs other installers that do the vinyl tape or heat-gun.
I guess if the odds are still bad, I can go with the Premier Diamond Cut IR. I've heard of issues with F1's Pinnacle film also.
This will be my first BMW and I really want things to go well, since it'll be a purchase and not a lease!