Pushing the boundaries of PC technology these days requires something special. We are now being spoilt with graphics cards that can pull hundreds of FPS, and adding to that we can double, triple and soon quadruple them up thanks to CrossfireX and such; so motherboard manufacturers are under the gun to get products out that are functional, have plenty of features and perform at the top of their class. Only a few companies constantly score like this and ASUS is one of them.
The Republic of Gamers series of boards that ASUS is pushing out are designed to be top perfomers in overclocking, functionality and practicality. While there are bells and whistles on all of their boards, each feature has a specific purpose to enhance the board's capabilities, and each new board adds something new. The Maximus Extreme certainly pushes things all the way, it's going to be hard to top this one out.
On the whole, while the board does cost a pretty penny, if you're after a feature packed board that you expect to last you for quite some time, then the Maximus Extreme might just fit your requirements.