Hubitat allows for easy device management and is extremely expandable thanks to the ability to have community apps and drivers. It's great and I definitely recommend it to most everyone. A lot of us have multiple hubs..
Another possibility since you already have a Z-wave stick and a spare computer is to give Home Assistant a shot. It can get complicated quickly though so it's not for everyone.
Thanks to the flexibility of the Hubitat (and Home Assistant) there are even apps that can bridge devices between the two...
Again it all depends on your technical prowess and how willing you are to mess around with things. I have a home assistant server running on an RPi for testing and exploration only. Hubitat is my "production" hub...
Here's an older Paul H video about Home Assitant... around 9:28 gives his summary including recommending the Hubitat if you don't have the time/inclination.
Also should be noted that Hubitat USED to have a usb stick for the US (Nortek - Z-Wave/Zigbee combo) and ?2 sticks? for outside the US. With the C-5 & C-7 models the radios were moved to the main board for everyone.
