eBay cheapies are rubbish ime, they attract more grease and dirt than without, and you get rainbow blurry efffects if you look at the screen on an angle. Using an SGP anti fingerprint one, that I don't notice is there, apart from less time spent cleaning the screen. I did go for a month without, but ended up with a small scratch on the dark part of the screen somehow, and I'm pretty careful with the phone.