I pretty much wrote off the Matt Smith years. It was a pity because the acting was reasonably good, let down by dodgy scripts and unnecessarily complicated plot lines - it became a soap opera.
Most of Matt Smith's time I liked, partly because I thought he was great, but also because I saw the shows as an improvement from when David Tennant was the Doctor.
Not David Tennant's fault, but it all seemed a bit choreographed with the initial, "Oh no! What will we do" followed by the sub Buffy running around in peril, with the occasional Bernard Cribbins moment of deeply profound "Your Mum doesn't understand, luv.... 'ave a cuppa".
I got a bit irritated with those plots, they seemed a bit over contrived to have the necessary "special ingredients" in them.
For me, the best episode I've seen was (the first?) impossible girl one, where she's surviving under the ice on the Dalek prison planet -with the shock ending.
In a not unrelated thing, I loved Sherloch up until the final (last) series, the showdown with Moriarty on the rooftop as the ending of the previous series being just fantastic in my eyes.
But that last series, it was massively disappointing (IMHO) and I complained to a friend that it was at points as if they were trying to turn it into Dr Who, not knowing until he pointed it out, that Steven Moffat was writing both series.