I'm not into multimedia so MAC/OS X is out for me.
mac is not really for multimedia only. i'm a pure coder din. pero depende pa din what type of programming you do, kung nasa .net ka, no choice but to go with windows. pero kung multiplatform yung language/s na ginagamit mo mas maganda kasi mas madami options.

Linux for desktop use? Well it haven't got there yet.
people who say that dont really give linux a chance. especially these days na malaki na improvement ng linux sa desktop. i admit medyo malabo pa ng konti given the lack of standards, or should i say people following their own standards, pero once you look at it from a different frame of mind pwede na sya, at least for the IT community.