Of the Marvel shows I've completed. I'd rank the them like this.
Daredevil Season 1
Daredevil Season 2
As you can tell, not a fan of DD Season 2. It was far too disjointed and all over the place. It felt like 3 different seasons all melded together and not in a good way. It just didn't know what it wanted to be. I though JJ did a much better job of introducing Cage than DD did in introducing the Punisher, and Elektra, and the Hand. DD 2 had no real villain. It was just a mess.
Cage started off great, but then it felt like it should end around episode 7, but then dragged on for 6 more episodes with almost an entirely new show. Had they kept that season to 10 episodes I think it would have helped it a great deal. And I know they want to keep the heroes separate until the Defenders, but there were a couple of points where I'm wondering why Cage isn't picking up the phone to call JJ (since you know they know each other).
I'm about 7 episodes into Iron Fist. I like it a lot thus far, but at this point in Cage I thought it might be the best Marvel show and then it went down hill. Fist isn't as good as JJ or DD 1, but pretty solid show into the midway point.
I'm really looking forward to the Defenders which is only like 8 episodes so it should be a nice short compact series.