Just finished watching the Defenders. It was alright. I think they really struggled to balance the strengths and weaknesses of each of the characters and I found that to be incredibly distracting.
Daredevil was a great standalone series (how you guys found it boring is beyond me, but maybe I was able to appreciate it more as a martial arts movie enthusiast). Jessica Jones really surprised me and got me hooked during the second half. I didn't really care for Luke Cage due to the inconsistencies in his character. And I thought the Iron Fist was flat out boring due to the poor writing.