FLOLAB NanoArmour Phone Screen Protector

This is the screen protector I use on my phone. What I really like is the installation system—it makes getting the protector lined up correctly way easier and helps avoid the dust, bubbles, and crooked edges that make installing screen protectors so annoying.
 
The glass stays really clear and doesn’t noticeably change the look or feel of the screen. It’s definitely more expensive than the generic options, but for something protecting a phone I use constantly, I’d rather buy a good one and install it right the first time.