Which wax is subjective and a personal choice. Some like shiny/reflective, some like a deeper "glow." The best return on investment is the prep before the wax. For example, if you had a scratched up and faded car, you wouldn't likely see much benefit from just waxing it. The scratches and fading would still show. If you spent time polishing (or possibly even claying first) to ensure a smooth clear surface, you would see a much greater improvement.
Now, this isn't to say that your car is faded or scratched, but it's to illustrate the point of full prep vs. just waxing. And again, which wax to use is up to you.
As to the polish, that would be determined by the condition of the paint. If the car is in great shape, going over it with a one-step like PwC may well be enough, whereas a neglected finish may need multiple products, possibly even a glaze.
Sorry if this seems too generic an answer, but each car is unique in needs as are the preferences of the owner. If you do get some pics posted, it may help to get some more specific suggestions.