My first sealant was Zaino back in 2001. Since joining Autopia, I have tried all the new kids on the block except FMJ, old reliables Klasse and also all the highly praise carnuabas / blends / syn waxes that were reasonably prices (<$100). This was fun and all look good but are now collecting dust, sold or traded on abay or I use on friends vehicles that will not really care if the protectant last 3 weeks or 4 months.
Nevertheless, after all these trials to convince myself what was best for me, Zaino is on all my driven vehicles.
Check the trading post thread and start your own testing for cheap. There are a lot of fine products out there that may meet your need for a easier process. There is no other product out there that allows multiple layering in one day (ZFX).
Many detailers do not need this high-tech product (ZFX), need to do multiple layers, instant curing when applying a layer and not able to store vehicle indoors for the first 24hrs to prevent sealant from moisture exposure during the unaccelerated curing process, or find mixing ZFX an inconvenience.