Marvel Feature #2: I liked how the characters played off one another.
Defenders #17-18: Power Man and the Wrecking Crew.
Defenders #22-25: The Sons of the Serpents, Guest Stars Galore and a twist ending.
Defenders #44-50: the New Zodiac and Jake Fury.
Defenders #62-64: Defenders for a Day for the sheer lunacy of it, plus loads of B and C-characters.
Defenders #92-100: the Six-Fingered Hand!
I might be off on some issue numbers but that's what came to mind first.
I'm excluding the Avengers/Defenders War and the various Squadron Sinister/Supreme stories!
The man knows his Defenders!