The service quality has been amazing! I had close to no experience when it came to modifying the settings, but it was way easier than expected! I highly recommend PremiumARK, simply because they have been able to give customer service on a level that I have never experienced before. We experience no lag, low ping and great configurability!
They have many features with many upcoming changes that should definitely be checked out!
We're currently running 3 clustered servers on PremiumARK and won't be switching anytime soon!
If you want to check out their service, they offer a trial that I believe will give you a proper feeling for how the game servers run.
In my experience the hardware is top notch and PremiumARK gets very good feedback on server knowledge by other ARK server technicians!
I would recommend PremiumARK 11/10 times.