I had a MVPS-4 package with Knownhost, i had a problem with the hosting and the support would not assist me at all. He went out his way to just "fob me off" with lame excuses and no actual help to assist me. Just a complete run around and time wasting session. I have never encountered such difficult support ever from any business.
You would think that when you spend $978 per year on a single host account with just 1 website on it that they would go the extra mile to keep a customer happy? well not at known host that's for sure.
It was easier for me to move my website off the Knownhost VPS and onto a new hosting account with another company where the support assisted me to get my website up and running again quickly.
Other than the woeful support i received the actual hosting was very slow for a 6 Core VPS, so i guess the hardware they are using is from the 70's.
Anyway that's my review of Knownhost as an ex customer. Review collected by and hosted on G2.com.