If you are planning on buying an Intel motherboard, chances are it has an Intel or NVIDIA chipset. Where does ATI fit in? DFI's ICFX3200 features the RD600 chipset, and we will see how it compares to other boards we've reviewed in the past.
Define cheap. The absolute best overclocking performance can be found on the nvidia 680i chipset but if your looking for the max FSB (if you have a CPU with a lower multiplier) the P965 Intel chipset is your best bet.