The 11th, Matt Smith, is okay, he feels like a cross between the 2nd Doctor and the 6th Doctor. The 2nd clothes wise, and the 6th being too nuts. The episodes are pretty good in his first season as the Doctor, except for the two part finale. All I will say that there was a great suspenseful episode interlocking plot/problem, hand they dropped the ball on the finale, because they wrote themselves into a corner and had to create a BS ending. If you think Tennant's Doctor had some moments where he got out of situations without having a clear explanation of how with in actual science or science-fiction science, then Smith moment in the finale takes the cake. It even broke the rules of imaginary science, if that is even possible.
Other Who fans on the Escapist have harped on me in the past because I criticize the 11th's first season finale. They usually comment on how, oh, it was awesome and really funny.
My point is that it was too funny. With what the big plot problem was, there wasn't enough drama. Doctor Who is suppose to be a dramatic science fiction-like show with a bit of humor mixed in. This latest finale, was like a comedy show, with touch of drama. Watching Smith then, was like watching a clown dance merrily in a war zone.
I still recommend watching the latest season, just for the episodes that come before the two part finale. Seriously, if one or two of those episodes had been bad, and I had watched the finale then, I would have given up on the show, this is coming from a Doctor Who fan that has done the best he can to find and watch every episode from 1963 to now.
If you want to watch the latest season, since you said you hadn't, if you have a good net connection, go to places like sidereel.com and surfthechannel.com. They usually have links to episodes that have been placed on megavideo.com.