Read the statement by Michael Teeuw here.
Best/Differences between mirrors
I just finished my first smartmirror project and I used https://www.amazon.com/dp/B0732S9XB9/ref=twister_B06Y2FYJ6V?_encoding=UTF8&th=1 which seemed a bit expensive. But now that I see there are a lot of different options and I was wondering If i could get some good links and what are the differences between film acrylic and glass. and what should I look for in terms of transparency.