They are releasing a pre ZFX'd version of Z2P and Z5 very soon.
As a minimum, you should get Z2P and Z8
Ideally, ZAIO to clean, Z2P, Z6 and Z8
Good looks, but no fun and a bit tricky/touchy to use. I had a water drip etch into the finish whilst it was curing, which pee'd me off no end as I had to strip it all back!!