Win7 over OSX?
Has anyone ever tried to get software for a Mac not made by Apple/Microsoft/Adobe? If not try it, 99% of it is rubbish that will exhibit some serious, unwanted side-effects. Similarly, if you do find software for a Mac that is not made by one of the aforementioned companies, you will find that it is overpriced. Fanbois will be crying foul at this observation! Give me empirical proof you say. Okay, fine. SVN clients. On Windows one has access to the excellent, opensource TortoiseSVN (note the OPENSOURCE) on Mac we have access to well nothing usable really unless you're willing to stick your hand in your skyrocket and fork out (at reduced price & one time offer) $59. The counter-argument is that one can use terminal instead, but WTF is the point of buying a Mac instead of using a Linux distro if I'm forced to go to terminal?!
Being the owner and user of Mac/Win/Linux systems one quickly realizes the pros and cons of each. What I can say for certainty is that my servers will always run one flavour or another of Linux but as for Personal Computing, for me Apple is out of touch not MS. Win7 really is the bees knees and in my mind far superior, not only due to the improvements made in the OS but because I'm not locked into the workflows dreamed up by Jobs and his minions. The days of Apple's superiority in the hardware sector are drawing to a close. I just got a ThinkPad W510 and it's performance and quality are truly staggering.
Conclusion -> Give me choice and quality over aesthetics any day.