RayBay;
I think I have split personalities because I agree with pretty much everything that's been said.
Sometimes, I like polishing the living daylights out of my paint. Other times, I like a quick wipe-down, but demand a high shine.
So, basically, you wash away the dirt w/ cg that leaves a clean surface, then spray and buff another product to add another layer to start the shine, and then even it out w/ a QD. I think step 1 makes a clean surface, then #2 adds the real shine, then step 3 evens everything out.
My suggestion, to shorten time with all that wiping would be to find a high-gloss spray-as-you-dry sealant. I think the QD step can be removed for sake of time. I don't see QD's doing anything other than removing smudges and fingerprints etc. The QD you listed, does it really add any shine?