We use virtualizor also and also trialed SolusVM and just did not like it.
The short time we trialed Solus, we contacted support twice and they were responsive but in the long run, I have no idea what they are like.
Virtualizor is the same, initially, support is responsive. Once you have more than 4 licenses, it begins lacking to the point that their support is totally useless.
So long as you don't need their assistance, virtualizor trumps solus on all levels.