If you want somebody to put the screen protector on for you go with ghost armor , find a kiosk location on there site
Stay away from zagg
Stay away from zagg
I don't find higher quality screen protectors reduce clarity or touch sensitivity, so that is just not the case. I am sure there are cheesy ones that do this cause you get what you pay for. I think for most screen protectors is more about peace of mind. It is a personal choice. I use them and when the time comes that I want to sell my device I can always say my screen is scratch free and this usually allows me to net more return. These displays do get little tiny scratches that become evident over time.