Modern Warfare 2 or Halo 3 ODST Or both?

[Dimadimadima]

I have 190 to waste so im thinking which one i should buy or if i should buy both, I have Halo 3 and i love, it i've played CODMW on my pc (P90 whore) i enjoy it as well, but should i just get one and save my money up for another day or both???
Oh i meant 190$

 

[jorstar]

get halo and save up, modern warefare 2 SUCKED!