I love both episodes by Gaiman. 'The Doctor's Wife' is my favourite episode of Series 6 whereas after a look back on series 7, 'Nightmare in Silver' is my probably my favourite episode of series 7. It would've been better if Moffat hadn't started adding things in like the two kids. Like I said, I love both but the kids bring 'Nightmare in Silver' down slightly so I prefer 'The Doctor's Wife'. I rate Gaiman highly as a writer, hope he returns for Series 8.

I liked this one, it was surprising & oroginal.
"Nightmare in silver" was disappointing for me.I felt like the fight between "Doctors" was part of the show aiming at 12years old viewers, it was so predictable, felt just naive & childish for me. And Matt turning his face one side or another to "become" one or another.... Such a cheap cach, like some animation for kids. Just no.

one of the best episodes ever

Best episode of series 6 and one of my all time favourites :D

Nightmare in Silver was one of the worst episodes I've seen in my life. It was so disappointing! It wasn't even a true Cyberman episode.