Ya... I'm a Zaino Zealot as well, but I'm going to stick with the Z2, Z5 and the ZFX additive, due to the simple fact that the last few products I've tried have not had too much success (Grand Finale - debacle).
I'm a creature of habit and consistency, give me a product that performs well and is consistent; and I'll use it - No muss, no fuss!
XFH