Not all paint protection is created equal. Most silica based coatings are not truly chemical resistant and will breakdown over time with exposure to pollutants. Expect 2-3 years of protection. OptiCoat is ceramic based so is in a different class to silica based coatings and will not break down and can only be removed by abrasion.
A chemistry-based comparison as explained by Dr David Ghodoussi, founder of Optimum Polymer Technologies (yes his doctorate is in chemistry) will explain it better...
"The argument is not about bond energy but rather how inert the bonds are (e.g. Sodium Chloride has a bond energy that is over three times Si-O bond, however, it readily breaks down and dissolves in water). Si-O bond is readily hydrolized in the presence of acids or alkali. Therefore, most cleaners whether they are alkaline or acidic as well as environmental contaminants that contain acids such as bird droppings, bug splatter, acid rain, etc. will break down silica based coatings. That is also why most silica based coatings require use of boosters or reapplication.
The Si-C bond however is not affected by acids or bases since there is no catalytic mechanism to break it down. Therefore, silicon carbide chemistry is not affected by the environmental contaminants. Furthermore, Si-O bonds are prone to degradation by the enzymes in bird dropping and bug splatter whereas Si-C is not.
The proof is seen everyday since with Opti-Coated cars (Si-C based chemistry), the protection is permanent and the bond does not hydrolize or break down with cleaners or environmental contaminants and the paint is not damaged over time. On the other hand, Silica based coatings will break down over time and have a much shorter life expectancy and either acidic or alkaline chemicals can penetrate and damage the paint underneath."
Opticoat also provides a warranty and can be covered by some insurers, so if the vehicle needs to be repaired a reapplication of Opticoat by a licensed Opticoat dealer is included in the repair. The one thing I can not stress enough with any coating, they are not set and forget, you have to maintain them. People who see a drop off in performance have allowed contaminants to build up on the surface usually from not washing regularly enough or at all.
As for your concerns in regards to appearance, it's all in the preperation, a proper decontamination and polish is key. It is true that Opticoat is not as glossy as the others, this is because it doesn't contain gloss enhancers that most silica coatings do. The catch is, these enhancers wear off pretty quickly.
If you do decide to go with Opticoat Dave at Protekt Auto is the person to see.
https://www.protektauto.com.auFull disclosure: I have previously been employed by Opticoat but no longer have any association.
Mr Morlock wrote:Bruce said - "Modern paints are more than good enough to last for years/decades if you take care of it.
If people want to spend the money they are very welcome but modern paints - last 20 or so years have paint jobs that can easily last the life of the car.
Unfortunately in the last 10 years paints have become very thin and will not be as durable as they could be. Manufacturers are saving money where they can and putting less paint on saves time and money. I measured the paint on a brand new (one of the first delivered) machine grey ND RF's that hadn't been polished by the dealership, it measured around 70 microns. For comparison my 2008 Golf measured 120. Can't tell me something nearly half as thick will be as durable.