I use a tiling window manager - dwm. Which basically means I have exactly this layout, but easier to manage and control via keyboard. I used to use a mac pro with divvy, sizeup, etc but the workflow is just not as good as when I'm using dwm. Your millage may vary, but I've grown annoyed at the decisions apple takes in OSX to cater to the most common denominator, ie. the common non techy user that likes that their machine looks hip and works how they expect out of the box.