As I've said before, while I do appreciate what Russel T Davies has done in bringing
Doctor Who back to the popular mainstream, he's stumbled quite badly in penning some of the recent episodes (particularly that lame deus ex machina ending to Season 3 and of course,
Voyage of the Damned). Which leaves me wary of the stories he's penning this season, particularly the season finale. C'mon RTD, enough w/ the deus ex machina!
The other stories I'm willing to take a chance, though I've no idea how they'll turn out. With the exception of Stephen Moffat of course, as I'm sure his story will be another winner.

The man has proven time and again to be the new series ace in the hole, much like the late Douglas Adams was in the old series.