Tough call, I voted Genesis purely on how sexy that car is. But the Z being $10k less is a plus. Especially since they have a very nice exhaust note. T1R Sparrow sounds amazing on that car.
I may be a bit biased, but hyundai has made a generally lower grade of vehicles all this time (in general, not trying to start a flame war), and I'm just not a fan of hyundai or kia at all. 350Z ftw, much classier and overall I would say they're looked on much better by society when compared to a hyundai. That and they look so much better. Just my 0.02.