Without getting into the microfiber debate, I'll offer some tips on minimizing swirls and micro scratches in your paint no matter what you use.
Use a hugh quality automotive wash, and don't skimp on adding to your bucket and get plenty of suds.
Use a lot of water-spray the surface throughly before you put a mitt with soap on it, and when you rinse.
Don't wash in circles, rub your mitt front to back
Throughly rinse your mitt, having a rinse bucket for your mitt before you put it back in the soapy bucket is a great idea.
Wash top to bottom of course, but don't go top to bottom once section then move to the next and go back to the top. I actually do a modified top to bottom -wheels and tires first with one bucket and mitt, lower panels next with a fresh bucket and mitt, then top down with a fresh bucket and mitt (always use the same mitt for each section). This gets the hard work out of the way, and keeps a wet uppers working surface before you start to dry. It also keeps you from dragging any heavy dirt up the vehicle. Given the size of a MH, you probably need multiple fresh wash buckets for each section.
Drying (which is where a lot of paint damage actually occurs:
You really don't want a totally dry towel, as no matter how soft, it is abrasive. Make sure it is damp (dry off your windows first for instance)
As you dry, use detailing spray on each wet panel. It lubricates the surface as you run the towell over it, and helps pick up any left over dirt. This is my top detailing tip. The detailing spray also has some wax in it, and will prolong your regular wax job.
As with washing, run the towel front to back, not in circles.
I am not a fan of chamois, as they have no nap, and any dirt particles get drug I to the paint.
As for general paint care, using detailing spray on a dirty surface instead of washing properly is going to damage the paint. I only use detailing spray as I dry a clean surface, or for a quick wipe to clean off bird poo or other serious contaminant very carefully. Bird poo is very abrasive, so turn your towel to a clean section on each wipe.
Now, how practical my car care practices are going to be on a MH is an entirely different matter, but I do think they proved a good reference point.
Regards, and happy holidays!
2015 Tiffin Allegro 31SA, 24k chassis
2015 Jeep Cherokee Trailhawk