Having driven the current Camry w/ V6, Accord 2.0T and the new Sonata (I was with the StraightPipes and Throttle House guys in Alabama), my preference in terms of engine is definitely the Toyota's. In driving it back-to-back with my dad's '15 Camry XLE V6, the new engine is notably spicier.
The 1.6T in the Sonata was a bit of a let down. Aside from that, the Sonata is every bit the match of its competitors, and in terms of tech and interior design, the class-leader now.
My full review is stagnating while we wait for Hyundai Canada to announce the $#@%ing pricing for the car. If the 1.6T Ultimate comes in around Accord EX-L 1.5T pricing, it'll be a killer value.
Oh, and we saw a mule Sonata N-line parked at the assembly plant, but sure as sh!t didn't get to drive it.