Megs 21 2.0 has become my sealer of choice and I've tried a bunch - including zaino. It's easy on - easy off and gives a very good look (IMHO) and is slick. I usually top with Megs 26 after the first or second wash just to add a wax layer. After that it's AW every other wash (I wash the car weekly).
Well I won't be using any QD's with it just wash with Meg's # 62 wash which is an underated wash btw...
I am going touse Meg's 21 or the Klasse twins topped with Werkstatt Acrylic Jet cuz I luv that " candied " acrylic look as I have used the twins before.