That is actually not a good recommendation today. Nortek HUSBZB-1 is old product based on old chips.
Better to get a dedicated Zigbee Coordinator and a dedicated Z-Wave Controller based on newer chips.
I’m not saying that Nortek HUSBZB-1 is bad but it does use obsolete chips no longer manufactured. Latest EmberZNet Zigbee SDK firmware released from Silicon Labs is not supported on such old chips.
Much better to get a Zigbee Coordinator based on Silabs EFR32MGxx or Texas Instruments CC26x2.
Current benefit of Texas Instruments over Silicon Labs is that it is better supported in Zigbee2MQTT:
Silicon Labs (a.k.a. Silabs) “EZSP” serial protocol used in their Zigbee firmware only has experimental support in Zigbee2MQTT (while they supported Texas Instruments ZNP serial protocol for many years):
ZHA integration do however support all adapters, though newer with later firmware is recommended:
Only for that reason are Texas Instruments based Zigbee Coordinator recommended over a Silabs one.
Posting that is the Zigbee section in a thread discussing Zigbee could be considered trolling. Anyway, Zigbee, Z-Wave, Thread, EnOcean, and Bluetooth are all much better then Wi-Fi when it comes to battery-operated devices because they do not need to sleep as deep and wake up faster so offer better response and battery life. Those are facts about those technologies and not subjective anecdotes. Regardless, this is the Zigbee section and if you guys want to discuss protocol religion about other protocols then may I suggest considering posting such discussions elsewhere instead.