I'v tested some other top VPS Providers/resellers (AWS, Digital Ocean, Vultr, etc.) and find that VPSServer.com offer highest performance/price ratio on market. One of the highest (top 3) IOPS, Unixbench and Network perfomance at lowest price from my research. Setting up server with operating systems is matter of few minutes. Managing is simple and clear.
The force driving server virtualization is similar to that which led to the development of time-sharing and multiprogramming in the past. Although the resources are still shared, as under the time-sharing model, virtualization provides a higher level of security, dependent on the type of virtualization used, as the individual virtual servers are mostly isolated from each other and may run their own full-fledged operating system which can be independently rebooted as a virtual instance.