I had one as a rental last week in Tampa. I still much prefer the exterior shape and design of the Gen. 7 Malibu. I will say that the interior is nicer in the Gen. 8, but some things I don't like. Some of the switches have a real cheap, cheesy feel to them. The dash light dimmer and steering wheel radio controls to name a couple. I also don't care for the touch screen radio/climate control set up. Much too distracting trying to use it, compared to what is in my '11.
All in all, a very nice car. Just not sure I would trade my gen. 7 for one.