Actually, I think the Zooz and the GE may both be built by the same manufacturer (Jasco) and are just rebranded. I havenāt looked that up to be sure, though. But they appear to be similar quality. The difference is that Zooz are newer and are using a zwave plus chip. But GE has a Z wave plus model certified, currently due for release in December. I think theyāre just letting stocks of the older models sell down a little first.
(edited to update @TheSmartestHouse has corrected me below, Zooz switches are not made by Jasco.)
The biggest advantage of zwave plus is significantly longer range.
The following thread discusses the features of different brands. The light switch discussion starts around post 35. It should answer most of your questions.
