Online is where this games huge strength lies - BRILLIANT!
I just cannot get bored of it, played every single day since launch 24/11/10 and still find things to do.
Online is just AMAZING. Whatever you feel like doing, be it just showing off cars to trade to cop chase rooms to the full on proper races and up to 16 players at a time there is always something online for you.
Weekly "Seasonal" races are a good way of earning money fast and with time & drift trials keep a competitive spirit going with world and friends leaderboards.
The dreaded standard cars have been given the biggest make over, with new cockpit view (although only a blackened outline) and the ability to change wheels at last, I find if you change wheels and re-paint them they look a lot better!
DLC has at last reared its head, paid for DLC mind you, but still DLC, and the magnificent Spa Francourchamps circuit, beautifully rendered and up there with the Nurburgring as best track.
All in al,l if its a realistic racer with the best physics on any console, or if you just like collecting, this is the game to get, and now at $20 you can't go wrong!