re: Greatest Saints game ever played ......

The 2009 Patriots game was pretty close to perfect.

Brees had a perfect game going 18/23 371 yards and 5 TDs for a 158.3 QB Rating

Brady had the 10th worst game of his career going 21/36 for 237 yards, 0 TDs, 2 INTs for a 55 QB Rating

But in terms of best games the team ever played all around, that's kind of tough. But a dark horse contender has to be the worst defense of all-time shutting out the Bucs 41-0.

Some stats from that game:
Brees 26/39 307 yards 4 TDs 124.6 QB Rating
Freeman 26/47 279 yards 0 TDs 4 INTs 37.5 QB Rating

Saints rushing 25 carries 149 yards 1 TD
Bucs rushing 16 carries 67 yards and a fumble

Hartley was a perfect 2/2 and 5/5

Morstead had a 53.6 yards per punt which is his 10th best average of his career

5-0 Turnover ratio

About as perfect a game as you can ask for winning the battle in the air, on the ground, and on special teams.