Actually installed this after my phone screen was saved by the previous screen protector (PThink). This one was very easy to install and works well with both the Poetic Revolution case and the case which came with iPossible battery. It seems slightly thicker glass than the PThink. I find it very reflective and have to tilt it some in bright light to see the screen clearly (wasn't an issue with the previous protector). Also, I never really understood what "rainbowing" was but now it happens regularly with this screen - not all the time, but definitely crops up, mostly in a small section usually near the lower center screen. It's not a big distraction, but definitely noticeable when the screen is dark. It also attracts fingerprints/smears more and requires a little more work to clean - not super bad, but I notice the difference after over 6 months using the previous protector.
I don't doubt for a minute that this protector would save my screen from breaking just like the other one did.
Overall I'm satisfied and not rushing to change it. But at some point I will and will definitely go back to the PThink.