For an enthusiast board the configuration is questionable, hardcore-overclockers will not be very satisfied when high CPU-clocks can't be reached. Meanwhile, other manufactures have released their highend boards and are selling them for about €40,- to €50,- less, Wi-Fi is not an argument for such a high price premium.
The board itself runs stable. We will look into the performance issues with faster memory. If you aren't intersting in overclocking and a decent CPU will suffice, it will do the job, but there are cheaper boards arround that will do the same job for less money. Hardware-overclockers should be cautious.
The ASUS P5K Deluxe retails for about €190,-.