Hey, I traded *my* ASUS A7N8X Deluxe for an NF7-S a few days ago. Just waiting for the "mail" to arrive!
After reading a lot about both boards - and owning and clocking with the ASUS board for quite some time I decided to switch to ABIT.
For any decent results the ASUS board requires volt mods, sketchy and dagerous at the best of times (fatal at the worst...), and I got to the point where I felt too damn scared to do next Chipset volt mod and realized that the board just wasn't meant for overclocking on. The ASUS board also has some *VERY* serious BIOS corruption issues, that, if you are overclocking, will almost certainly result in you paying for a new BIOS chip, or performing multiple (also really sketchy!) BIOS hotflashes. Not fun at all.
I probably won't get a higher overclock with the NF7-S, but I managed to trade for the cost of shipping, so I am very happy.