The NuFinish goes on and off fairly easily. Just rub it on (it's sorta greasy feeling though), let it dry, and rub it off. It rubs off very easy although it does make a lot of white dust which can be easily remedied by a wipe with a clean towel. The only drawback is that it "stains" the plastic trim (such as the mud guards) if you're sloppy although there was another post somewhere that listed a product that would take the white "stain" off the trim.
Having used it for years I've been satisfied with it but am ready for a change and am going to try the Zaino. With the ZFX accelerator drop it seems like it will be as easy as the NuFinish (alhtough a bit more expensive).
To keep the NuFinish from gettting all over the black gaskets, mud flaps and other black plastic I always apply a light coat of Black Chrome (Available at most auto centers) then the nu Finish wipes right off and I don't have that ugly white marks all over my gaskets.
I've used Nu Finish before in the past. It does a great job of bringing back the shine on an older car. As for newer vehicles, I really like Meguiars. It goes on and comes off very easy. I really like the Gold Glass version. The shine is unbelievable compared to other products that I have used. If you read the Zaino threads, it seems that you'll be very busy applying multiple coats to get a great shine.
Quick shout to the other North Carolinians. Catbert, I don't get the "Finally" part of your message as I have been posting on this site for quite some time now, but anyway.
To the question of where you can get Zaino, I purchased mine from Carolina Shine, via Steve Treece's wife (i suck with names and have since forgotten hers, but she gave me his card). I do not know if they do phone or mail orders, but you can contact them at 704.759.0142 or by email at [email protected].