this is for people with 4 or 4s...since i think the screens are the same? if yes, just post the brand you use so if i decide to get one i'll know the best/favored one...i figured cheap ones would peel, interfere with scrolling, etc. my main concern is that it will change the color of my screen to appear darker, like a tint. does it? i've had nothing but a bumper since 4s launch. pristine condition with a few drops.