I went to Carlisle this past weekend. They had several C8's that you could sit in and get a good feel for.
My visual opinion on the C8:
-The interior is nice, best seats yet, and best materials used. Although the center stack of buttons looks dumn(just like the pictures), and the infotainment screen doesn't blend with anything.
-Exterior is ok, but not great. The front end looks exotic, GM got this just about perfect. But the back end is huge-I think GM wanted to give as much trunk space as possible, resulting in a large overhang on the back. And I don't know what they were thinking with those stupid Camaro tail lights. They definitely could of done better in this area.
-The car did have the "cool" factor of being mid-engine, especially with it visible through the glass.
-And there is plenty of room in the foot well for a clutch pedal for us manual die-hards.