Bendis for me was the worst.
The Silver Age issues between Jack Kirby and Neal Adams
The Post Siege Perilous "No Team" era circa UXM 264
The Onslaught/Operation Zero Tolerance end of Scott Lobdell era
The Alan Davis "Magneto War" / "The Twelve" Era
Claremont's first return and "Revolutions"
Utopia to AvX
Bendis' UXM and All-New X-Men
Living in Limbo Extraordinary X-Men
X-Men Gold/X-Men Blue
Other
Bendis for me was the worst.
A picture would last longer darling...