I think that Neothin has given you a start on a stellar way to maintain your vehicle. Wash technique is the best way to avoid marring and maintain a swirl free vehicle.
If I were to choose just one line of products I would choose Poorboy's since it has everything. They all work, easy to apply, protect well, last a long time, and look very good. I do use a lot of other products. Yet, not one other line has as many things to offer. Yet many lines have products that work well too. The best bang for the buck is Poorboy's in my book.
Do you searches and you will soon see what I mean. There is a products to do almost anything if you are willing to do the leg work to find the ones that satisfy your tastes.