Z77/Z75 boards are overclockable,and I believe B75 boards are also but don't quote me on that. I don't believe H77 and B65 boards are. There's a few links on the net explaining the differences between each series... z77/z75/B75/H77...etc...
Yeah, I did a side-by-side comparison of Extreme4 and Extreme6... and next to no difference. I think we know what the next big board is going to be... <.<
Also, I only got interested in hardware like a month ago. Do you know if the price drops on motherboards after they are released? Like... within a month?
I don't see them dropping in price that soon. Some boards...most boards drop in price, and a few boards never drop in price. The Asrock P67 extreme4 never dropped in price to my knowledge. It did offer free shipping a few times on newegg which saved $8.