Recently played COD4 for the first time (got 1000/1000 on it, too), having only played MW2 before. I know the story in these games is not exactly lauded, but I figured it might be worthwhile to play all three in a row to get a better sense of the series' trends and arc. Here's hoping Veteran difficulty gets easier - nearly had a heart attack going through "No Fighting In The War Room" and the epilogue.