Zaino has superior appearance and unsurpassed protection and durability. This durability includes maintaining that "just waxed" appearance thru out the life of the protection.
NXT seems to fade in luster after the oils/silicones dissipate. The NXT's ancillary products are not even in the same league as Zaino's Z6 and Z8.
With the advent of the Z2PRO and soon to come Z5PRO a sealant appearance now competes with the short-term wax competition in terms of wetness, depth and gloss on nicely prep finish.
No time to prep, you are better off using NXT (mild polishes and fillers) and just wax more often.