Liquid Glass is a sealant, similar to Zaino, Klasse, and Meguiars #20. It isn't as good as those on the list above, but it is okay.
If you like Meg 3-step, try the profesional line. #83 Dual Action Cleaner Polish, #9 2.0 Swirl remover, and #26 High Tech yellow wax. They are far superior products to the 3-step ones. Of, if you want the best, stop by a Harley shop and get some S100 paint cleanser and S100 wax. $25, two steps, excellent look.