Which one should i get? Pros and Cons

None of them both are garbage NFS the run terrible Cod, even wrost

get real nfs game that is nfs hotpursuit

Neither. If you want a good racing game get GRID or DiRT 2 (basically a matter of rally or asphalt). Do yourself a favor and skip DiRT 3 though. As a hardcore fan of the series, it really really lacks.
If you want a good shooter that you don't already have (Cause Blops really isn't worth your money either) try Bioshock or Borderlands or The Orange Box. And they're all really old and cheap.

Black Ops, I only enjoyed it for the SP campaign, even that wasn't particuly great but better than MW2's imo, Multiplayer was a P2P nightmare, laggy as hell I prefer when publishers use Dedicated Servers. cannot comment on NFS haven't played a NFS game since NFS 2 lol