For me, the "naked" glass still feels might best, but because I want to avoid scratches, I use a slide. The atFoliX is simply the best I had so far in my cell phones.
As for my HTC One (I've sold quickly), I get this film for my Galaxy S4. I am (again) very satisfied! The film can be easily and without bubbles muster is 100% fit and robust.
Most people did not want to believe this is a film on it.