I don't think we are supposed to post links to other forums. I found this last week on a GTR forum. The post is only about a week or so old. This guy is a film installer and has worked with many brands. I thought is post was informative and I've cut and pasted the text here. His user name is Jean-Claude
Written by Jean-Claude on a GTR forum... Good info "As someone who has installed and is an authorized installer for Nano-Fusion, Xpel Ultimate, Suntek and 3m clear bra films, I will suggest you think outside of the marketing box.
While Nano-Fusion has a lifetime warranty and Xpel Ultimate has a 10 year warranty, I believe you should consider the films usable lifespan rather than what a warranty covers. Warranties do not protect you from wear and tear of the film. Over years of use the film will get damaged by rock impacts, bug marks that were not cleaned off immediately, bird droppings left on too long and/or staining from lack of cleaning or protection. A better question will be what film provides the best protection during a reasonable and usable life and looks the best while it does it?
Here is my breakdown and experience with the biggest name films in the USA.
3m/Ventureshield: stay away from it. 3m sent Venture down the toilet after they purchased it. 3m scotchguard sucks just as much if not worse. The adhesives are terrible and the exposed surface is insanely prone to marring and scratches.
Nano-Fusion: Best chemical resistance(think bug marks, bird droppings and acid rain). Installer-friendly adhesive and stretchability. The last formula I used had more texture than I would be happy offering paying customers. "Limited Lifetime Warranty" is offered.
Suntek top coated self-healing film: Looks just as good as Xpel Ultimate and in some cases better(not every roll is the same from any manufacturer). Quality is top notch with fewer manufacturer defects that I spot. Best adhesive in my experience, which equates to a better installation. The best and quickest at rectifying manufacturer problems with film(install enough from anyone and you get stuff that slipped through QA). Best pricepoint. The self-healing attributes absolutely work amazingly and just as good as Xpel Ultimate. 5-year warranty.
Xpel Ultimate: Tied with Suntek on looks. Works as advertised. Adhesive is too aggressive and can lead to working marks where Suntek or Nano would not. Customer service is not quite as good as Suntek -though that may be because my distributor handles my claims with Suntek and stuff gets done fast(overnight a 40 pound box from the northeast to me in Atlanta? No problem for them). I have been having issues with Xpel Ultimate's film being as defect free as you would expect from the most expensive film on the market.
The bottom line for me is that I believe Suntek hits the mark for most car owners. Their product is priced competitively while providing just as high quality, if not higher, as anyone else. True, they do not offer a 10-year or lifetime warranty. But if you're driving your car and the film is taking a beating, will you be happy with how it looks in 6 years? Unlikely. View the film as a wear and tear protection for the paint on your valuable car. I know someone else who tells their Xpel Ultimate clients that they should expect to replace it in 5 years regardless of what Xpel says. He understands what the products real world lifespan is and shares it with his clients. Xpel and CCL(the company that manufactures Nano-Fusion) know that playing the numbers means 95% of car owners will sell their car well before 10 years or a lifetime is up and that warranty will not need to be honored when the film is cracking and falling apart and making a nightmare for a car owner. The law of thermodynamics proves that if it gets used, it will age.
With all that said, if I were looking for the most resilient film, looks aside, I would get Nano-Fusion. Though, if I were not isolating this to just my view on clear bras alone. Suntek with a coating like CQuartz Finest on top of it provides a lot of chemical resistance as well and is a fine option which would offer the best looks and stellar chem resistance.
I know Xpel Ultimate is big in the community and I am not saying that Xpel Ultimate is garbage and any of you have wasted your money. I am providing the viewpoint of a professional who actually has installed all of those films over the years. For everyone, the bottom line is if you're happy with your purchase, you made the right one."