BeckySharp writes "With the nearly simultaneous release of Apple's Mac OS X 10.6 'Snow Leopard' (available right now) and Microsoft's Windows 7 (available Oct. 22), you get the inevitable debate: Which is the better operating system, Windows 7 or Snow Leopard? To help determine that, Computerworld's Preston Gralla put both operating systems through their paces, selected categories for a head-to-head competition, and then chose a winner in each category." Relatedly, Phoronix has posted Snow Leopard vs. Ubuntu 9.10 benchmarks. They ran tests from ray tracing to 3D gaming to compilation. Their tests show Ubuntu 9.10 winning a number of the tests, but there are some slowdowns in performance and still multiple wins in favor of Snow Leopard, so the end result is mixed.