I think the biggest surprise to me is the connection between Nine and Rose. There's a clear attraction between them that doesn't resonate for me in quite the same way with Ten/Rose. More broadly, Nine seems much more generally sexual than Ten. Watching Ten, I assumed that The Doctor was not just solitary but nearly asexual. I saw that he truly loved Rose but it didn't feel passionate or sexual. With Nine, I felt a passionate connection.
But Ten is still my doctor. He's so effusive and charming and his hair just can't be beat.
PS. Google made me smile today.
