I don't use Zanio but have been using Klasse on my 01 white E320 wagon. I think it gives as much shine and depth as a white car can give. If anything, the reason to put the sealant on is to well, seal in the finish. I have let six months go by without re-waxing my car and it still was sheeting. For Klasse users, I had 2 coats of All-in-one, three coats of Sealant Glaze. Before you add a wax/sealant I would definitely clay your car first to make sure you are starting with a buttery clean slate.