I think the new ones are pretty nice. I've seen 2 new SRT's out so far, both with M-plates.
I agree, the CTS-V is a BA car, and it would probably be my choice if price were no object (since you can get it with a manual). But the 300c is a bigger car. It has more cargo space and more rear seat room. Plus the 300C SRT has a base price of $46k (the same as this Genesis R-Spec), while a CTS-V is $62k. At that price the SRT is a performance bargain.