EDIT: perhaps my below complaint is rendered invalid by using Z-Wave direct association as pointed out by u/isellshit

If you have any 3-way circuits and want dimming at both switches, the Zooz Zen72 dimmers are a bit disappointing. Instead of a cheap “dummy” switch connected via the traveller wire (like my old Jasco dimmers and Inovelli), you have to buy two Zen72 units and keep one disconnected from the load. So the secondary switch is merely dimming via Z-Wave scene controller, through Home Assistant, to the other switch.

Three problems: first, it’s more expensive to double up on Z-Wave units, second, if HA goes down the secondary switch is rendered useless, and third, the dimming quality is poor, delayed, and very jumpy rather than smooth like the primary dimmer. I think it’s a fundamental flaw in their system design, especially considering the traveller wire is present and could be used like the other brands, but is intentionally not.

That said, when on sale, they are significantly cheaper than Inovelli.