I'm still not sure what I'm going to do, most likely Gigabyte for me - I usually go for them but the Biostar is tempting me.
Gigabyte come with the new 3D UEFI Bios - this is appealing and something different, Gigabyte have the best warranty for people in the UK, also some Z77 boards come with the latest WIFI Technology, handy for Bluetooth and the latest IPhone/IPads, also the higher end boards use the Intel Lan instead of Realtek = less CPU % use - I think Asus use Intel Lan also.
The MSI Z68 was good but only one option of LLC and no offset option for DVID/Offset, the MSI boards look the best and have the best design layout imo, the GD 80 has Thunderbolt, no other board has this Technology yet and MSI are the first manufacturer to finally get rid of PCI on there boards - good or bad thing? I guess this depends if you use a lot of PCI cards inc soundcard and prepared to switch i.e. extra costs.
The Biostar boards are something different I would consider and will be cheaper than the other top of the range boards and probally overclock really well, warranty is handled via the distrubutor here in the UK - Target Computers.
Asus / ASRock boards have good overclocking options, can use LLC with Offset and same with ASRock this appeals to me, warranty a pain with Asus if anything goes wrong, ASRock warranty good but based in Holland - could be expensive if you handle the warranty.
I haven't seen the EVGA boards yet, they are slow at bringing their boards to the table, and I woudnt bother with an Intel motherboard anyway.
Obviously their is a lot of other factors for different people, cost for one.