Looking back, it's funny how close I was to the release date of Mac OS 10.5. According to my email, I purchased the MacBook on September 21, 2007. Mac OS Leopard was released on October 26, 2007.
One thing you gotta hand to Apple is the overall user experience. After registering my notebook during the initial start up, I immediately got this message in my email.
I'd have to say I enjoy Windows the most, not because of the OS (I would prefer Unbuntu) but because of the apps I can run.
I used to use a Power book full time and do enjoy the Mac OS X it runs perfectly still and I've had it since 9th grade (freshman in college)but the lack of some apps for games (pretty big gamer I'd say) keeps me from it all the time
Linux is a great OS and I love the customization, but heh just the lack of some apps kills it for me. I will try to get around this in the future I just don't have the time now >.<