I just got off the phone with an installer. He said he would install either one for the same price, but that PremiumShield was a slightly better product and has a lifetime warranty. $4,000 for whole car + $400 for the roof if non-pano. The two other quotes I got were over $5,000 for Xpel. I've never heard of PremiumShield, so I'm a little apprehensive about using it instead of Xpel. Thanks, in advance, for any advice.