It pains me to say ,but this is a dreadful game. Handling, sound, looks are all terrible. The bikes look great, however when you are racing the circuit and all its surroundings have a sepia tone effect, which considering this was said to be a simulation game is very unrealistic.
The final DLC (2010 Moto2 and 125cc) took a long time to be released and when it was none of the PS3 users were able to install it as the add on file size was incorrect. After a further months wait (now the end of November 2010) it was released correctly. However the Moto2 bikes sounded like you were riding onboard all the time.
Save your money and buy SBK X, or SBK 2011 when it is released in May 2011.