I watched his era years after everyone else did. Matt Smith had an amazing first episode with really defined quirky characterization. Then his next few episodes, he's mostly just angry and shouting at everyone, and all of that fun eccentric energy just goes away. During that part of series 5, I was calling him the "Gordon Ramsay" Doctor.

After that, his characterization just felt really inconsistent and all over the place, to the point where he felt like three different characters inelegantly melded into one. It's way harder to get a read on his overall personality than every other Doctor, and I need to rewatch to make sense of his very disparate psyches and emotional responses to things.

By series 6, the show fell victim to a "mystery box" writing style where Moffat seemed to be making it up as he went along. Much like Sherlock, he was also constantly teasing Tumblr theorists to the detriment of the writing..

He also unlearns a lot of the Tenth Doctor's lessons with little to no commentary or repercussions.

I spent his entire era craving the consistent characteristics I saw in The Eleventh Hour and rarely getting that. Exceptions: Amy's Choice, The Lodger, Night Terrors, Closing Time, and his finale were all fantastic Eleventh Doctor episodes, and if he had depicted like that in every episode, he'd be my favorite.