I tried them all over the years and have settled on Duragloss products almost exclusively. They are easy to apply, reasonably priced and they work. I recently purchased a Mercedes ML350 with the optional "Diamond" White paint. The paint is perfect and when I contacted Duragloss as to how best to maintain it they said after prep all I needed to do was use 601/111. I did not have 111 on hand and used 105 instead and it looks terrific. I will try 111 next time but I can't see it getting any better or easier than this! I doubt I will ever need 501 or any other kind of abrasive polish. I am pretty sure all I have to do is every few months put a couple coats of 111 or 105 and top with AquaWax once in a while and I'm good to go.
The Duragloss Fast Clean and Shine is a great detailer and can be used even as a waterless wash in a pinch although I still prefer PoorBoys Spray and Wipe for this. Their new rinseless car wash with AquaWax is as good if not better than ONR. I also use their Bug Remover, Tire Shine and the Nu-glass and Rain Repel for windshield and glass care. Everything works perfectly. However, I'm probably going to retire Rain Repel because a coat of AquaWax on the glass works at least as well.
It may be boring and I may be limiting myself by sticking with one brand but it also makes everything so much simpler. You learn how to best use the products and how they react to certain techniques and that all leads to a better overall job. And the questions of what goes well with what, what is compatible and not compatible among products, what will bond with this or that, etc. become non-issues. Boring or not, there is a lot to be said for that kind of compatibility and assurance.