Nexcloud VM best virtualizer for Linux

Hi There,
I’m new here.

Currently I’m testing with the free VM version of Nexcloud and planning on buying the complete package.
I’m using CentOS as my host server and now running NexcloudVM in KVM.
But that means concerting the .ova image.
And maybe also removing some of the usefull stuff that VMware or virtualBox have for NexcloudVM.

Is there any best practice on using the VM version of Nexcloud on Linux(preferably CentoOS)

Please let me know and thanks in advance.

Gr. Edo