I have both a MMini, and a Hubsan Zino Pro. While the Zino 2 has a higher performance the the Zino Pro, you're really comparing apples and oranges.....and your choice should depend on what your objective is. Either drone has enough range distance to exceed your ability to maintain visual sight of the flight. The MM is very small and portable, and its light weight allows you to avoid any drone registration requirements in NZ. But it is underpowered, and very susceptible to wind gusts, etc. Many people have flown away down a tailwind, and can't return back up the headwinds.
The Zino 2 weighs a kilo, with 3x the battery capacity. It competes more with DJI's Mavic 1. One thing that you should really research is whether the Zino has any visual sensors whatsoever. From what I can tell, the Zino relies on GPS ONLY, for navigation. My Zino Pro advertises 'pinpoint landing'. It is has no downward sensors at all, and requires the use of a landing pad. It uses its camera to optically land from where it took off.....The MM doesn't have many more sensors, but at least it measures altitude.
I'm not certain, but it looks like the Zino 2 has 'pinpoint landing' also.....Hubsan seems to have put their money into their radio link, and camera/gimbal.....at the expense of navigation tools.
You might want to consider a DJI Mavic Air. It's small, portable, and well built.
Hope helpful,
Cheers