I have been using PD since v3 and have generally been satisfied with it. I've been a beta tester for the last few releases. Recently I've had some problems pop up and have been forced to use Parallels support. On the plus side, support is responsive. However, the India-based call center techs HAVE NO CLUE WHATSOEVER! They suggest solutions that have no relation to the problem. I haven't been able to open Parallels for days because of a relatively common (several forum entries) "Unable to change the virtual machine permissions" error, and the support techs have been flailing around uselessly. Having someone respond quickly isn't enough, Parallels - THEY NEED TO KNOW WHAT THEY'RE DOING.