First thing's first, NO trolling >.<... please?
Ok, basically I have got some cash to burn and after looking at some youtube vids, it seems mw2 looks quite good (Well I already knew that, but you get ma drift) Basically it is £30 on amazon at the moment (which is $45) and I am stumped to whether or not I should get it. I will either get it on PC or PS3 (Because my 360 died on me

) so what I am asking is:
Is it worth £30?
Should I get it for PC or Ps3?
EDIT: I am a fan of being able to solo kill anything like a one man shooting machine