Zaino ZAIO is a wonderful paint cleanser in the same line (effect) as P21S cleanser, but adds Zaino sealant durability. It cleans minor scratches, marring with a PC. Deeper ones will require more polishing with a swirl removing polish and a good cut/polish pad combo (orange pad) then you could go back to the Z AIO. After the Z AIO, for quick and easy long Zaino treatment, use Z-CS.
As for Danase, never used it, but hear good things and some have shown the wet glaze works with sealants. Do not know how much hiding/filling you get with this glaze, but can't hurt. Z5-Pro does hide only minor marring.
If you are looking to fill more and less polishing, you're better off with a glaze/wax combo as those glazes contain clays that fill more and when used with a wax, hide very well. The old standby glazes were 3M Imperial Hand or Machine Glaze, Meguiars glaze etc.
Depending on your tools you'll use is what will determine how much work you have cut out for yourself and your skill level.
If you have a "PC" type polisher, and assortment of pads, then you're good to remove any swirls with the right polish and pad designed for a "PC" as opposed to a rotary. This is one mistake most make when starting to "do it yourself" weekend polishing. You need to match the polish, pad to what you are trying to accomplish. Always use a polish designed for a PC and not rotary. Pads depend on severity of the finish. Swirls mostly can be removed with a orange pad. Once those are gone, then switch to a white polishing pad and a fine polish and you're ready for your LSP.
Remember to wash the cars finish really well, clay it smooth, then go from there.
So far, finish polishing with Z AIO followed by Z-CS works very well. Once the CS has cured for say 24hrs, add some Z8 misted lightly over it as a QD and it's one hell of a finish which is also very slick.
As for the Danase glaze...Can't comment yet since I've not used it, but others have very good results with it under all types of sealants. Seems to impart a wetter look.
Just learn to take your time, budget enough time for washing, drying, claying, polishing and do not rush. There's always tomorrow if you run out of time/light etc. Once you get more time to learn how polishes work with what results, time start to be reduced.
So, it looks as you have several choices, all very good.
Regards,
Deanski