What swanicyouth mentions above, about where he lives maybe playing a factor, is something I think is really important.
I almost find myself double checking where people live when I start reading a review, because someone talking about their sealant lasting 9 months in California is not applicable to me -at all- living in Maryland.
Someone could get 3 years out of cquartz uk in California, and I don’t think anyone would really be surprised. Place that hardly ever rains and has pretty stellar weather all the time? Take that same car and put it in Michigan for 3 years and see how that coating holds up.
I’ve only tried one coating, PBL diamond paint coating, and it wasn’t a great experience. The stuff is a joke to work with, it flashed nearly instantaneously upon hitting the panel. Maybe if I did it not during the summer(ish) months it would be better. Maybe it’s cause it’s so humid here.
What I can say though, is that when you start investing the time into applying these booster products and babying the coating, where do you draw the line?
I mean some coatings recommend multiple coats. Some have you layering coatings on top of your coating to protect it from issues coatings were known for. What’s next? A second top layer to protect carpro gliss from something? From the outside looking in, it just seems silly. “I’m going to apply 3 layers of this and then top it with two coats of the top coat, only to finally top it off with the maintenance sio2 spray.”
Sure you don’t need to invest in the entire system, but when you don’t it can just be used against you to invalidate your bad experience with the coating.
Optimum is very guilty of this if you ever browse their Facebook group. Any failure of gloss coat basically involves shifting the goal posts as you troubleshoot why it happened. Didn’t use optimum paint prep? Sucks to suck. Didn’t use hyper polish before the optimum paint prep?

sorry buddy.
Even having said all that, I’d love to try cquartz uk 3.0 sometime, just because it seems to be a good “all in one” coating - according to forensics detailing. Im not against coatings, I just think they take advantage of the hype train, and as a result take advantage of consumers.
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