Since they were brought up not all that long ago, my ranking of the Netflix Marvel shows (they're all close, though):
Daredevil S1 (no noteworthy flaws whatsoever)
Jessica Jones S1 (for a private investigator in need of money she did disappointingly few private investigations)
Luke Cage S1 (only hampered by that bloody awful Luke/Claire romance, but severely so; what the **** was wrong with a friendship?!)
Daredevil S2 (the Punisher plot was great, but the Hand plot was meh incarnate outside Elektra herself and their romance flashbacks)
Iron Fist S1 (the fighting actually isn't remotely as bad as people make it out to be, but the whole 'abduct Gao out of "China" on a private jet' thread in the middle was fucking ridiculous, and Joy's sudden switch to vengeful villainy in her very last scene utterly unbelievable - plus, he needs his costume)