In Detailing, there is a saying... a smooth surface is a glossy surface. To obtain the "Wet" look requires a extremely smooth surface. This generally requires some work since any product that fills could only get you so far.
CQuartz Finest is a great product and it will last up to 2 years. I will be doing a coating (CQuartz UK Edition) for a client in 2 weeks. Maybe I could post some pics after. Of course, the coating will only be apply after a full round of paint corrections and polishing.
Here is an example of getting a smooth surface through paint corrections/polishing. This was a 3-step process (15 hours) followed by 2 coats of sealant.