Some boards that have the necessary settings to fully overclock a Sandy Bridge CPU to its multiplier wall:
ASRock P67 Pro3/Extreme4/Extreme6
ASUS P8P67 (regular)/Pro/Evo/Deluxe
Which model should you go for? That depends on whether you'll be doing SLI/CF or not, how many SATA3 6Gbps ports you need, how many USB 3.0 ports, and whether you need IEEE-1394 (FireWire) and/or Bluetooth connections. All of the ones I listed have good quality power systems, certainly enough to overclock any Sandy Bridge CPU to its multiplier wall. It's the extras they pile on and whether or not you actually need them that will determine the final choice.
I went with the fairly basic ASRock P67 Pro3 (at the time it was $124), and I haven't regretted my decision. It overclocks my 2500K to 4.8GHz and has no problems with the 12GB of RAM (one 2x4GB kit and one 2x2GB kit) I have installed.