Well to be honest I didn't see the appeal in Astrid either, she felt just so... Transparent and unexciting. I couldn't believe Ten falling for her one second.

Donna is another story. And I feel that they'll bounce off each other and have a really sparky relationship, not mooning all day long and be romantic about it. So it will hopefully be about chemisty and tension, much more like classic who.

He could never be past Koschei, there's no competition.