In my own opinion, I prefer Asus over Gigabyte, with Asus there is very little DSDT modification to get perfect hackintosh, No CMOS reset bug likes Gigabytes, with Gigabytes there are a lots bug to fix DSDT, and the energy safer feature in Gigabyte isn't save much(just several hundreds watts over a month ) and it is pretty annoying, it need a software to turn it on, and if Pc shutdown/crash, it need to be turned on.
I would recommend you to choose Asus main-boards matching any version here for highly perfect build.

---

10.6.2 Pcj 64-bit kernel | Mobo Asus P5LD2-VM Revision 1.03 945G/ICH7 Graphic Intel GMA950 | CPU Pentium 4 630 3 GHz HT
Sleep never wake up, Quicktime 64-bit crashed

10.6.2 Vanilla | Mobo GigaByte GA-EP43T-UD3L | CPU C2D E7500 | GPU GigaByte GV-N240D3-1GI Nvidia GT240 ( Full QE/CI )