[quote=@Dinh AaronMk]
You may think you're doing it on the cheap, building a whole rig... But then you buy the OS.
[/quote]

This can be taking care of often enough. I've only went out and bought one OS in my entire life, the rest was either borrowed (pour one out for the good ol' days) or reused.

The positive about building your own is that you can custom-chose each part that goes in, and you get more bang-for-your buck (at least as far as I can tell.). Just takes bit of work, and researching.