Gosh, must sucks to be alone on this one, wait I know people who have the same issues with patchy hazes and difficulty remove the new Z with just MF. I find the cotton MF combo to be my problem solver.
Using to much Zaino, not really, I use 1/4 of an ounce on a Corolla. 1/3 of an ounce on SUV/minivans. This is mixed with ZFX. I let the Zaino dry fully and I do the finger swipe test. Comes off clean and streak free.
I recently used 1/4 of an ounce of the new Z5 with 3 drops of ZFX and boy the Zaino was dry by the time I finished appling it to the car (corolla.) Took me about 8 minutes to apply. I let it sit for 3-4 hours (was away chatting in an Autopia chat.) Then went back into the garage and tried to remove it with a MF, still patchy haze spots that are not fully removed. I then decided to buff off most of the Zaino with a cotton Charisma bath sheet, then followed up with a MF for final buff, then I Z6'd to make sure everything was off. I was working under 1000 watt halogen lights.
To each his own I guess. I'm sticking to my cottom/Mf combo.