See, I think this is a fundamental problem I have with Doctor Who--I can't take all the Doctors seriously as one character. I like all the Doctors! But each one is a different person to me.
How many have you watched? Because the more you watch, the more they blend, despite their differences. As Eleven said, in his beautiful final speech:

We all change, when you think about it. We're all different people all through our lives. And that's okay, that's good, you've got to keep moving, so long as you remember all the people that you used to be.

However this time you should indeed be fine, due to DT coming back. :)