Basically, Z77 and Z75 are required if you want to overclock or crossfire/SLI.
In your case however, and because you do not have an overclockable CPU, you'd generally want to stick with either the H77, or the B75 chipsets as they cannot overclock.
For under $100, I recommend: ASRock H77-PRO4-MVP Motherboard for $95
ASRock is known to give a whole of features for not a whole of of cash. So their products are value-orientated. Not to say their bad quality, no, far from that.
It is more than sufficient for your 7950, and even has room for another one. It comes with 1x16 PCIe 3.0, and 1x16 PCIe 2.0. So no bottlenecks there.
Of course, you go even cheaper. But this particular board comes with 4x SATA 3 ports, and 4x SATA 2 ports. So you can have a maximum of 8 drives, whether it be SSD or HDD
But any H77 from the reputable brands (Asus, Gigabyte and ASRock) are good enough.
Hope this helps