From the mid 2000's to the early 2010's, Bendis produced almost 140 issues of Avengers, his run being the driving force behind Marvel's big events at the time including Civil War, Secret Invasion, Dark Reign Siege, Fear Itself, and Avengers Vs. X Men.
I've heard mixed things about Bendis' stint on Avengers. Some people consider it one of Bendis' best comics while others argue it was the point where his writing went downhill.