I just like the feature from the Otterbox protector since it works so well with anti-reflection (I did a side-by-side comparison with my last year Belkin one). Won't go back with the Belkin one (it's $40; idk if they made any improvements this year), and won't consider other protectors other than glass protectors.
The reason I choose the Otterbox protector is that it does well in anti-reflection (even better than the $40 Belkin I had last year), plus it's a glass protector so it will prevent cracking the screen from dropping.
Between 2012 to 2017, I never used a protector because when I was using my iPhone 4, I had both the normal soft clear protector and the frosted protector, and both were easy to leave scratch marks.
4O4-N0T-F0UND OP t1_itdb05g wrote
Reply to comment by maziar37 in About protecting your iPhone if you have Apple Care (Also about user experience). by 4O4-N0T-F0UND
Hmm... thanks for telling me. The Apple staff did not tell me that. Something I need to keep in mind.