I honestly think that the Z5 polish leaves a much smoother finish than the Z2. Your Thoughts?

I'm going to retire the Z2 and use nothing but Z5 from now on. Call me crazy but I think it's easier to remove too

 

Interesting observation. I agree with you. It's smoother, and my shine after Z5 is definitely better than it is after Z2. I think it's because we have lighter colors.

 

not sure that this is a good idea...
z5 is a swirl remover, so it must have some cutting action- which means that it is like a mild rubbing compound. my guess is that it will eat through the clear coat quicker than z2...

 

The Z-5 does not remove swirls, it fills in very fine scratches and swirls for the length of the polish, around six months. There are no abrasives in the Zaino products for the paint.

After recently using a Porter Cable random orbital polisher with the 3M swirl mark remover on an old acrylic enamel finish, took three coats of Z-5 to hide the swirls that were created. YMMV, but if the swirls and scratches are still there after about 6 coats, more drastic action is warranted.