I didn't visit the site so I wasn't aware of that but as I said, G.Skill ain't worse nor better than Corsair vengeance so it's just for looks and brand. And it's too bad that they don't stock ASRock as their mobos are great. But Gigabyte UD3 will be at least as good as a Extreme3 gen3 so no worries there, it was just one good mobo out of many.
Just remember to buy a PSU from a good manufacturer. I was just checking what PSUs Rebel tech stocks and they do sell Antec and Corsair's powersupplies so no worries there, both are very nice.