After trying ESR and Spigen, all I can say is that the Spigen's EZ FIT GLAS.tr screen protectors are the easiest to install by a mile compared to any other glass in the market. Didn't try the ESR in my 12 Pro (just returned it) but I did try the ESR on my new iPad Air and sent it back after getting bubbles galore with the two included glasses. Also the installation frame didn't fit correctly on my iPad Air. At the end, decided to run my iPad Air with no glass and only the smart folio.