My guess is that the Open Home Foundation and Nabu Casa will probably announce their upcoming new official Zigbee adapter called ”Home Assistant Connect ZBT-2” before the end of this year (and likley sooner rather than later), so recommend that you wait for that one if you can. There at at least many things that now point it to being released very soon → Frient joins Works with Home Assistant - #3 by Hedda
So for now maybe just get the ZBT-1 today and migrate to the ZBT-2 later, as migration will be super easy and you can then reuse the ZBT-1 as a Thread Border Router for the Matter integration instead, and that way you help sponsor the Home Assistant project → Home Assistant Connect ZBT-1 - Home Assistant
If you can not wait then suggest testing ITead’s new “SONOFF Dongle Plus MG24” as Zigbee Coordinator USB adapter which is based on the same Silicon Labs EFR32MG24 radio chip so should be somewhat futureproof → ITead’s new “SONOFF Dongle Plus MG24" based on Silicon Labs EFR32MG24 radio microcontroller SoC has now been launched
Note that your setup/enviroment and the total amount of mains-powered Zigbee Router devices you add to your Zigbee network mesh is generally much more important than the Zigbee Coordinator adapter that you use, (as Zigbee uses mesh networking so having more Zigbee Router devices makes for a stable Zigbee network), therefore be sure to read and try to follow all the best proctice tips here → Zigbee network optimization: a how-to guide for avoiding radio frequency interference + adding Zigbee Router devices (repeaters/extenders) to get a stable Zigbee network mesh with best possible range and coverage by fully utilizing Zigbee mesh networking