I think there is nothing better!

The protective film is to bring in my opinion very slightly. Only pay attention to the dust! So hold your breath, alignment and finished ;-)
Also have virtually no fingerprints on the display. And I have a direct comparison of work. My colleague has the same phone without foil ..... a powerful difference. While he must often clean and you see the streaks and marks in extremely light, he wonders again how my screen looks without constantly brushing.
(Of course, be different with soiled and greasy hands is)

And for general protection, I can only report positive. My little has repeatedly thrown his toys or other what he got hold of it and there is nothing to see!

And who wants to know more, enter Spigen on YouTube and look at the different tests and self-tests. ;-) Very interesting when one sees that even a Stakemesser should leave no scratches.
The price of a "film" is very high, but I do not exactly what is happening with my previous phone, which prevents this protection of Spigen. Had to my former S3 an expensive shell and only ne "normal" film! Phone falls down onto the display, torn .... repair then 240th
I let me now the super protection rather cost what if this is prevented.

So, I can only recommend and I would pick up again and again for my next device. Thumbs up!