OK, Which one? http://www.scan.co.uk/products/giga...3gb-s-pcie-20-(x16)-d-sub-(vga)-dvi-d-hdmi-mi http://www.scan.co.uk/products/asus...gb-s-pcie-20-(x16)-graphics-on-board-mini-itx
I'm surprised that SCAN does not have B75 mITX board like the ASRock B75M-ITX. The price is the same than the two boards you listed. MSI is releasing a B75 ITX board mid-september (info given to me by MSI sales)
I used that Asrock board in a build recently, its a great piece of kit and for the price is fantastic. I really liked their implementation of the uefi bios too. I too am surprised scan don't stock it.
Prices I have found are all a little more than the two I suggested plus I can get either of these tomorrow. I think that the Asus might just have the edge.
I had the Asus one seemed a decent mobo I only sold it on because I wanted Nvidia instead of the Intel graphics.
Overclockers seem to have a large range of mini-ITX boards available, depending on whether you want to deal with them KRONOS. Cancel that. The boards cheaper that the ones your looking at don't have PCI-E x16 slots.