Yeah, I would avoid their VPS. I benchmarked their higher end VPS and they were still not great. Ran a few as well on Vultr, Linode, and DO and ended up going with none of them. Linode performed the best for VPS for me, but price-point wise, it was a better deal to head straight up to dedi's on OVH.
I still run small VPS instances for various workers and what-not, but straight up app and db servers go to OVH.
If I go for dedi, do you know any tool to simulate running multiple, independent VPSs on a dedicated server? I was thinking maybe something like creating Docker containers on the dedicated server, but I'm not sure how the management/provisioning/resource sharing would work, plus I assume it would still need extra IPs and stuff like that for each VPS.
It would be nice to have like a Control Panel where you can link dedicated servers, and then provision VPSs on them using an UI like the one on DigitalOcean. But I guess this would mean having a complete DO competitor (without the hardware part) :D
Do be clarify: you want virtualisation environment, hypervisor?
If yes, then you can go with VMWare ESXi or Proxmox. Both have web based consoles to add and manage virtual machines.
Like you mentioned, you need additional IP-s, Hetzner has 6 (/29) for €6.72 per month [0], OVH has one time fee €2.00 per additional IP[1].
I still run small VPS instances for various workers and what-not, but straight up app and db servers go to OVH.