Which is the better Call of Duty

Do you enjoy The old or the New the Broken or the well Oiled what appeals to you more. Of course you can start off with the nostalgia of Call of duty Classic which wasn't too far away from Counter strike when it came to Multiplayer, and really the next 2 COD games were not about the multiplayer as much as the world war Storyline. With the old world war theme and the clunky cinematics that were good for its time, or are you into the new. I have heard many people say that New is better and when COD 4 the first modern warfare came out it sure seemed the case. An enormous amount of people played and were surprised by the thought and effort that was put into making this game. But then came COD 5 World at War and it seemed like the series took a step backwards many fans were again surprised or horrified that the game pace was slowed down by slower guns and perks. Then came MW2 people waited for hours in line just to get it the same night of the release to go home and to start playing. The game had some notable differences and whether or not i was better then the previous MW is up for you to decide. 
           Now a new year a new game did they rush it was it put out before it should have been, or is it the best yet.  Do you feel that Infinity Ward is better then Treyarch or is it the other way around. So lets hear it members of GB Whats your preference