I don't use the big boys like zagg or spigen etc (funny since I usually only buy spigen cases lol) I tend to use one family firm on amazon.
I've never actually drop tested but the protectors themselves have never let me down! Good fit and look good too.
Gorilla Tech

Premium Tempered Glass Screen Protector Invisible Shield HD Cover 9H Hardness Crystal Clear HD Quality Shatter & Scratch Resistant for Apple iPhone 7
https://www.amazon.co.uk/dp/B01KVZKK...mUvbUpU2959799
I've used this firm on my 5c, my Samsung s6, 5S and now my 7. Oh and got one for my wife's SE as well.