doubleofive said:

Let me get this straight:

Eccleston was pretty excitable. It's actually one of the things I liked about him.

Then Tennant comes along, and he's just as excitable, but less little kid-ish about him

And Smith is even more kid-ish than 9 or 10? I've managed to avoid any previews of 11, hardly the impression I got from the plot I've gleaned (its hard to be 4 years behind on a show).

Eccleston was more thuggish than excitable. But he would get excitable at times.

Tennant was a lot more excitable and running around-y than eccles.

Smith is like tennant X 2 on acid turned up to eleven. I do like his doctor sometimes though.