I guess you could say that Fusion and Parallels have fairly comparable features such as games/3D support, wine-like features, and virtual machine support. Having had difficulties installing Ubuntu as a virtual machine in Parallels in the past, I’d venture to say that seeing Ubuntu in one of Fusion’s screenshots is encouraging. Plus, they say they support 60 OSs including linux and BSD. I’ll take their word for it being VMware is one of the pioneers in the world of virtualization. Both retail for $79.99 and for a limited time, $59.99 for Fusion. Thus, if I were to spend on my next virtualization for my mac, I think I’d spend the extra ten bucks to try Fusion.