I know people on these forums have several experiences with this and this is not a Parallels or Fusion question. What I like to know is, according to everyone's experience, which one of the virtual software runs smoother (stable) or less painful to run a bootcamp partition? I just purchased a 17" Macbook Pro, very happy with it, and I will install BootCamp on it because I might play games with it. Nevertheless, when I want a quick use of Windows, I want to just use the VM to run the BootCamp under OSX 10.5. I'm afraid that Parallels will again speed up the fans and runs sluggishly and Fusion, although runs cooler and less sluggish, will kill the bootcamp partition like others said. Please input your knowledgeable experiences, thank you!