Zaino is a sealant system. Not a wax at all. It is quite durable and creates a very sterile/clear look to it. It makes metallics pop nicely and brightens most lighter colors.
Right now, nothing will touch the durability of Optimum's OptiCoat. You *must* fully prep and polish your paint prior to using it. It is a true, permanent coating (no, not snake oil; go research it heavily). Compare it to CQuartz line; they're kind of on the same page, but Opt. has them beat.
Ruger: Hate to say it, but unless you were rubbing your paint with sandpaper, there's no way the *proper* use of a cleaner wax is going to ever destroy your clearcoat when applied reasonably by hand. I've seen several clearcoats fail, but never from the proper use of an off the shelf cleaner wax. There simply isn't enough abrasives in it to do that. Several car mfg. did have clearcoat failures in the mid-late 90's though.
For the lazy crowd... Collinite 845IW; Zaino ClearSeal (ZCS); and Optimum Opti-Seal all offer very similar durability.
For any product to look great, you will have to polish the paint first, especially if you have swirls. You will never get there working by hand. Only so much can be accomplished by hand no matter how much labor you put into it.
If you're a real bum and just want instant gratification: Meg's NXT 2.0 or Ultimate Wax have a LOT of fillers in them that will cover up most minor swirl marks.
Generic procedure:
Wash
Clay/decontaminate
Polish (number of stages will depend on paint condition).
Rinse (optional, but polishing dust is best disposed of quickly).
IPA Alcohol wipedown
Apply wax/sealant of choice
How far you go is up to you. Some of us are more finnicky about our finishes than others.
Paint Care & Detailing - The Enthusiasts guide to detailing