since you plan to go slight OC...well, the bottom classed Z87 will meet near the highest classed H87 mobo prices.
Z87 is not that expensive if you are not aiming for the real mainstream or high-end classes.
Also, you do not have to pay always more for products like from ASUS. ASRock makes good boards with more reasonable prices.
Gigabyte and MSI are also nice.
Depends on the presence of Gygabyte GA-Z87-HD3 in our local store and it cost about 26$ higher.