Asrock 890GX-EXTREME3 is a good choice with 3 double-spaced graphics card PCIe slots (no adaptor cables needed).
Japanese caps, nice layout, and takes nice-and-cheap AMD Sempron 140s too.
Bitcoin address (if I r teh winn0r ;-): 122e6qqx9uqDuPLBGECESsmU4Pc6E1E2rw
Hmmm I would probably buy this one (motherboard) instead of the one I picked... damnit! actually wait no, i'll take the 5 pci slot board, since it's dedicated mining rig i'll run linux on it instead and therefore the 5 slots is favoured instead of 4 slots; but if your running windows go with the ASROCK board Calibre selected