PC Build: Which Asus motherboard should i choose? (Ordering all parts in 24h)

I'm in need of some help on deciding which Asus motherboard to buy for my new build which i will be ordering all of the parts within' the next 24 hours, expect the 8800GT as i already have it here.

The budget for the motherboard is from £60-80/$120-160. I won't be using SLI but if the board is good and features it i would'nt mind buying it either way.

(Lowest to Highest)

Asus P5N-E SLI http://www.ebuyer.com/product/125082
Asus P5KC http://www.ebuyer.com/product/132275
Asus P5N-D nForce http://www.ebuyer.com/product/142585
Asus P5K-E/WIFI-AP http://www.ebuyer.com/product/129126
Asus COMMANDO http://www.ebuyer.com/product/126252

Here is my final list so that you can have an idea of what the board will be used with.

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:Antec 900
:Intel Quad Q6600 G0 (Retail)
:Motherboard Asus -------- 775
:EVGA 8800GT 512MB KO
:Corsair 520W HX Series (Modular)
:Corsair XMS2 DDR2 800-6400 (2x1GB)
:Samsung HD Spinpoint (2x 500GB)
:Samsung SH-203D DVD-RW (2x1)
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I don't have plans on OCin the system due to me not really knowing how to, but i may try to a small amount for the CPU but nothing too extreme.

All feedback/help would be good.