I have been using various versions of Parallels for years. I have also tried using competing virtualization products. During that time I have continued to return to Parallels as my go-to virtualization application. Parallels is very easy to install and get running. I have been very impressed by its start-up and shut-down speed, which keeps getting better with every new release. I have quite a variety of virtual machines running under parallels - including Windows, Linux, and Mac. The performance of my applications programs running within Parallels virtual machines continues to be very impressive.