Corsair's shizz is kinda overpriced for what you get. I have had both kits, but switched to the HyperX in the end. Mainly for looks.
EDIT: I had the Vengeance kit. The Dominator kit is so sexy, but still not worth the extra $. Take that extra cash, and put it towards something else.
Super Edit: I can show you what the White Hyper X looks like in my rig if you would like some pictures.