I say you should. the game modes are still simalar in 09 and 10. How ever the graphics are better.
You can't. You will just have to wait for NBA Live 2010.
FilmSnobbery Live - 2009 2-1 was released on: USA: 3 August 2010
FilmSnobbery Live - 2009 2-2 was released on: USA: 29 August 2010
FilmSnobbery Live - 2009 2-3 was released on: USA: 5 September 2010
FilmSnobbery Live - 2009 2-4 was released on: USA: 13 September 2010
FilmSnobbery Live - 2009 2-5 was released on: USA: 14 September 2010
FilmSnobbery Live - 2009 2-6 was released on: USA: 17 September 2010
FilmSnobbery Live - 2009 2-7 was released on: USA: 20 September 2010
FilmSnobbery Live - 2009 2-8 was released on: USA: 24 September 2010
FilmSnobbery Live - 2009 2-9 was released on: USA: 27 September 2010
FilmSnobbery Live - 2009 2-10 was released on: USA: 4 October 2010
FilmSnobbery Live - 2009 2-11 was released on: USA: 4 October 2010