Hmm, I would pick the Gigabyte if I had to pay for both, but for free.. hard to say. The 760G works fine, but I haven't tried playing DVDs or HD video files to test whether the IGP is the same as the 780G.
Oh, biostar doesn't really update the BIOS much, so no Thuban support, and I think that mobo supports 95W max TDP CPUs only. No 125W CPUs.
Also, the Gigabyte unlocks, the Biostar doesn't.