I posted this on another thread.. posting this here as well to help out those considering on a ceramic coating.

Having just installed Ceramic Pro (Gold) package, frankly, I do not think ceramic coatings are worth it.

Pros and cons from my research / observation :-

Pros :-
1) Easier to clean
2) Hydrophobic and slick, as such, water and dirt tend not to stay on the surface as much. It doesn't stay hydrophobic / slick forever but most places will offer to "reload" your coating when the effect wears off.
3) Offers a sacrificial layer of protection. Again, this is debatable how much protection it actually confers. Your clear coat is generally about 40 - 80 microns thick; a layer of ceramic coating is less than 3 microns. More layers, more microns but there is a limit how many layers you can put, thus, unlikely to be more than 15 microns.
4) It adds gloss to the look of your car. Yeah, your car looks glossier but a good wax / sealant can give the same effect for much cheaper.

Cons :-
1) Your car is not bulletproof. It will still chip and scratch. Don't buy into the marketing hype that it will protect from scratches. Protection from very minor low impact scratches from blunt objects maybe (if it can slide off the slick coating without digging into it). The 9H rating doesn't mean much (read up on the scale).
2) Just like your clear coat, the ceramic coating will scratch and mar. Maybe slightly less easy because it's slick (when new) but there will still be swirl marks despite being extra careful (ask me how I know).
3) With ceramic coating, if you see surface imperfections, you can't just polish it off (i.e. paint correction) because if you do, you will remove the ceramic coating (money down the drain). If you are good at DIY, then you can remove the coating by polishing and reapply, but even then, it's not easy to remove the coating completely as it may still be on certain parts that you can't see.
4) Some may say that without ceramic coating, every time you polish / do paint correction, you remove some of the clear coat, which is true, but it will take a lot of polishes (or very bad technique) to grind down on the entire clear coat. Also, if you do finally grind down the entire clear coat after a few years, it's probably time to repaint your car anyways.
5) Water spots. I haven't encountered this yet personally, but I have been warned to be wary of water spots. Water spots can etch into your coating, which then needs to be polished off / fixed. Do check with your detailer if they would fix the problem for you if you see water spots. Ceramic Pro's warranty (as written) does not cover water spots but they would probably still help you to fix it.
6) If your car already has a thick hard clear coat (like certain German cars), forget about ceramic coating. The clear coat would offer more protection than the ceramic coating ever will. Just apply a nice sealant / wax on the clear coat for the hydrophobic effect and you are golden.

If I am given to option to re-do this, I'd probably just get a really good detailing / paint correction job on my car and apply a polymer sealant (good for 6 - 9 months) after that. There are so many products in the market these days that are easy to apply and that can provide hydrophobic effect and some level of protection. If I want to keep my car tip top always, then I'd go for some paint correction lessons and invest in some paint correction tools. In the long term, would save a lot of money, as you'd be able to make your car looking like new on your own without having to hope that your detailer would do a decent job.

If you really wants to install ceramic coating, look up Red Details on youtube. The guy (Roy) is based in Penang and if you watch his videos on his youtube, you can tell he is a very thorough detailer. I was initially considering on getting him to detail my car, but unfortunately, due to logistic reasons (I'd have to drive up to Penang and leave my car with him for 4 days), I opted for Ceramic Pro instead. You would not be getting the same level of detail and attention with Ceramic Pro. Roy will take his time with your car and ensure the coating is done well (which is why it takes 4 days). He does the whole process himself apparently, thus, you won't run the risk of some lesser trained detailer working on your car.

One other thing, he uses Nanonix coating. I don't know much about this coating but apparently, it's a Thai brand but the coating itself is manufactured in Japan. According to him, he has tried many coatings (including CQuartz Finest Reserve) and found this coating to be best for Malaysian weather. Take this with a pinch of salt though, as my research has not yielded much info on this brand of coatings.