I hope you have the facts straight though. Zaino is actually less steps than KLASSE, and Z1 and Z3 are cheaper than KLASSE AIO and KLASSE SG. The KLASSE twins are like 40 bucks for the both, and Zaino Z1 and Z3 come to only 22 bucks. One bottle of Z3 should last you about 8-12 coats. As for time, you have to apply, let dry, and buff off for both systems.....a wash in my opinion. Again your choice, just making sure you have the facts straight. Finally, if slickness and water beading are important to you, there is no contest........