It fits in the glovebox? Whoah! Seriously, why would you want to always carry your wax with you?
I don't know about the products as I've never used them. I like Plexus for the plastic window and prefer P21S polish and wax over Klasse but there are a lot of great products out there.
Go to
http://autopia.org for the nirvana of car detailing and product info.