I liked the Daleks (I usually do), Davros, the explanation behind the Master's escape last season, and the exploring the Dalek armor scene.
I disliked the Dalek sewers, Davros' force field still being in the control room (?), and the Tardis re-assembling (?? I think I missed the line where he 'explained' what happened to it). So I guess in short most of the ending. Except the true ending - it was obvious that the Doctor was going to go back and save Davros from the hand grenades (sigh), but the reason why I liked.
I like the new Masters. She's a lot of fun. I wouldn't mind if she wasn't the Master, however - if she'd been a new character, like a time lord who had been driven insane by being in a stasis box too long - but I understand the desire to tie her more intimately to the Doctor so fans don't wonder why she wasn't a one and done monster of the week.
I do think that her over the top act is just that - an act that she's putting on around the Doctor.