I used Skinomi which is very similar to Zagg. It was fairly tacky for about 2 days and now is smooth as glass. I have only a very few micro bubbles left and nothing large enough to see unless in direct sunlight and your looking for it. The best part that is it leaves virtually no fingerprints or smudges from use. It does seem to have a bit of static charge which can lead to lint, but a quick swipe of the thumb across the screen and it is clear. Never used any of these products before on devices, but I am a believer now!