I'm using one too, running a 3570k with H100i only doing pull from the top. Like the previous user said, it does have a lot of room for cooling, and it looks great with the large clear window, I just wish it has more 3.5" drive bays, I now have to plan my HD upgrades a little more carefully.
I posted this in another thread, I have the MSI Z77A-GD65 MB and the front panel connection cable from the Air 540 is rather short, I bought a extension cable (NZXT 11.8" Front Panel Combo Cable Set) for it, which at the end worked out pretty well, but I do wish the original cords from the case are longer.
Thanks, I was able to purchase the wired extension from my local MicroCenter and it is from NZXT. :D Now I have plenty of wire length and it looks nicer too.
I have a pretty basic build, but if I have time I will definitely post some photos up.