There is really only one choice for me when it came to virtualization on OS X, VMWare Fusion. I’m a geek at heart, so I’m constantly trying out operating systems, be it some new distribution of Linux or an old version of Windows. Parallels may have won the right to being the first mainstream virtualization on OS X, but VMWare Fusion offers me so many more options. With it, I’ve created three different VMs to date. The first is my Windows XP for the express purpose of running my Windows only critical apps (Microsoft Money, MCE WebGuide3). I don’t surf the web in it and I keep it protected behind the OS X/VMWare Fusion NAT. I’ve also built a VM to run the latest version of Ubuntu, mostly because I have a fondness for the distribution. Last I built a VM with gOS because it’s been getting a lot of press and praise. All this for just over $3 (couple of gift cards and a $20 rebate). With Parallels I’d be locked to Windows and that just wouldn’t be any fun.