In order I enjoy the most
3) Black Ops
5) COD 4 ( I bought it only last year and hacked lobby every time I join)
3,567,34) Black Ops 2
It's a real shame you played COD4 when it was hacked, before it was, at launch it was truly brilliant. The beauty of the series is everyone has a different perspective, I've gotta admit cod4 looks a little dated now, but back in 2007 it blew me away.