A nice vehicle with a blend of the SS's performance and the Genesis' luxury/refinement is the Cadillac CTS V-Sport. Maybe give one of those a look?
http://www.caranddriver.com/reviews/2014-cadillac-cts-vsport-twin-turbo-v-6-test-review
http://www.caranddriver.com/reviews/2014-cadillac-cts-vsport-twin-turbo-v-6-test-review