How to implement Z-wave

[FCeelen]

Hello To all,

Im new to this forum and to domoticz so forgive me if i post in the wrong place.

I run domoticz on a proliant microserver and use clearos as the OS.
Till now i have only used it to capture output of my Youless energie monitor.
I want to add some things that i can controll and afther some searching i found z-wave to be the best candidate.

Thats where my question starts. I found 2 ways of controllers
1 a USB pendrive like Aeon Labs Z-Stick
2 a raspberry pi whit razberry

Wiche one is better or are they both as good.

If i choose the usb pen drive i asume it has to be installed in the server. or is there another way of doing this like a raspberry pi that i can use downstairs.

If i choose for a razberry what do i install on it. A secondary domoticz server that is a slave to the proliant?

as you can see i have have a lot of questions and i hope someone here will help me to find a answer.

Thanks in advandce.

Regards Frans