I think not using an aftermarket screen protector is just foolish. (The one which comes with the TP is just good for only a placeholder - it peels and attracts so much grease it's like an oil spill--looks and feels bad.)
I bought and installed
Ghost Armor and am very happy. Not only does it do a good job of protection it makes the usage better too - the device and screen now have a less slippery texture so screen swiping/stylus action is more accurate, and there is less grease/dirt buildup too.