^ I really enjoyed series 6 while watching it. Especially the opening two episodes, they're amazing. (Again, Moffat has a brilliant set up that's pay off doesn't quite live up to it.) It's only looking back on it and actually thinking about that shows t up as a bit of a shambles.
Also I hate how random Clara's career jump was. Like there was no mention of her wanting to be a teacher at all in series 7, then all of a sudden she is one in the 50th with no explanation at all. Just a even a throwaway line about how she got the job, moved away from Archie and whatever her name was would've done the job.
I disliked series 6 while watching it. Except for the first two and A Good Man Goes to War. The biggest problem was splitting it over 7 or 8 months - it made it virtually impossible to follow. I watched it in full about a year ago and was able to follow the story by watching one episode straight after the other, but it's still an utterly forgettable series besides the three episodes I mentioned.
On a related note, the first seven series in order of preference from worst to best (not including the specials):
Series 7: I really can't think of a reason as to why this series was good (unless you count Day of the Doctor as part of the series). Ok, the cliffhanger at the end of Name of the Doctor was pretty good, but that's too little too late to save the series for me. Too many forgettable episodes. The only one I've re-watched is Journey to the Centre of the Tardis, but that was botched any way.
Series 6: For the reasons stated above, really. A crap story arc was made worse by being split over a year. A few noteworthy episodes. It did have the fat blue man, which was a plus. He had a great name too - Dorium Maldovar. I'd actually like him to return.
Series 2: This is where things start to get better, without being brilliant. Highlights include the Satan's Pit two-parter. A slightly cheesy story, but it had some really thought-provoking and emotional bits too. But there was a lot of average stuff as well, including the series ender. I also never really bought into the 10/Rose relationship. The Doctor shouldn't fall in love with his companions like that.
Series 5: Had easily the best Doctor debut episode of the new series. The angels two-parter was good too. Amy's Choice was a nice, creepy episode, though it had a crap ending. The crack in the universe story arc was annoying, but I liked the finale episodes.
Series 3: Martha was probably my least favourite companion, so that's not a good start. The first half of the series was ok, but the second half? Dear god, Human Nature, Family of Blood, Blink, Utopia and Sound of the Drums are probably the best 5 episodes of new Who, and they come here one after the other. That alone is enough to make it into the top three, for me.
Series 1: First off, Chris Ecclestone was a brilliant Doctor, and it's a crying shame he only had one series. Again, the first half of the series was average, but Dalek onwards was excellent, and I'll never forget the regeneration at the end of Parting of the Ways as it was the first one I saw. An excellent way to kick-start the revived series.
Series 4: Struggling to think of anything negative about this series. Maybe the Sontaran two-parter? Maybe the Agatha Christie one? But other than that, it had Tennant at his peak, the best companion/Doctor relationship in new Who and some cracking stories, including the Silence in the Library/Forest of the Dead (the Vashta Nerada need to make a comeback, mainly coz of their cool name), Midnight, Fires of Pompeii and of course a brilliant, and emotional finale - the best one of new Who. Series 4 is by far the peak for new Who - it's gonna take some beating.
I haven't rated series 8 for obvious reasons, but it's looking good so far, and is easily the best since series 4. It started off well, had a minor blip with this week's episode, but I'm looking forward to seeing how it develops over the coming weeks. I have a feeling there is plenty more room for darkness, so hopefully that's what we'll get.