I've played enough to unlock the National B series and I'm loving it. First thing I did after purchasing the Honda Fit RS was put some chrome rims 2" bigger on it and bought Comfort Hards, a new suit and helmet, spending most of my remain credits.
A few quick thoughts:
-I love that they are incorporating different times of day into A-spec, dusk at Brands Hatch looked great.
-Comfort Hards made for some good challenging races. I even had to upgrade to Comfort Mediums to win a couple of the races. I've won 7/14 races completed so with those tires it is not a sure win. Most my victories and losses have been within a half second with one larger and that was at Big Willow and it was bumper to bumper until the last corner.
-When going off track you can hear the car bottoming out, running over brush and whatever. I don't recall that on GT5. Nice Touch
-There seems to be better trackside atmosphere compared to GT5. They feel more alive like an event is taking place.
-So far I would say the game is beautiful. Definitely some aliasing issues but I expect that with PS3 at this point.
-Awesome selection of rims from what I saw.
-The Mercedes Vision car is awesome and a handful to drive. I love that they included the video of it. Gives it more feeling.
-The menus are really fast and I like the UI. Race loadup takes a bit of time but I hear that's because it's installing and should get faster.
-The recommended dealership is an awesome touch. Makes it very user friendly.