In the past I got it at the Apple Store and had it installed. This year, I went with ESR and iCarez. I am happy with the full screen protection both offer, although I decided to stick with iCarez after testing. No bubbles on either screen protector and the alignment tray provided by both makes for a perfect fit each time. A lot cheaper than the Berlin at Apple.
Bruh, I just went to get my iPhone exchanged and had Apple install a screen protector for me. They clamped it down to a machine, and look what I just found when I got home and inspected my new iPhone.