I’ve used Solar Gard for 16 years. HP charcoal had major delamination problems. Some customers would swear that they didn’t roll down the windows, ever, and would still have major delamination after a few years. HP Supreme, NR Supreme, and Ultra Performance will not fade or turn purple. You’ll be amazed at how they’ll keep their color. But the ahesive is crap. And it’s getting worse. I stopped using Solar Gard in December. I was starting to see 2-year old Ultra Perfromancd jobs bubble up on back windows.
Sun Tek is, uh, ok. It’s cheap. I used CXP and CIR. CXP does not block the heat that they advertise. No way. And CIR is way too green. Both Sun Tek and Solar Gard scratches like crazy. Especially SG Galaxy.