X2...Zaino isn't an "over the counter" type "wax". You gotta want to use it. And learn how. And do the preperation. NXT is nice and easy and provides a great shine...for awhile. NXT also does a very good job at filling in swirle markes. Better than Zaino.
However, if you wish to keep that "just detailed" look for 3+ months or more, you will only get it with the proper preparation and Zaino. As for cost. Price per application is about the same. A little Z goes a long way.