Has anyone here compared the cheap monoprice matte protectors to the powersupport anti glare ones? I know powersupport is known as being one of the best, but im wondering if the quality they offer is truly worth the price. Im fairly happy with the monoprice matte protectors but not only is it grainy (which i expected) but along with those grains are a rainbowish effect that i noticed. Its not too bad but it shows up a lot on a white background. So my questions to you guys are: Does the power support anti glare have a rainbowish grain to it? To those who have used both the monoprice and powersupport, is it worth the upgrade? I'd appreciate the help!