Yes, I would have preferred that the Doctor had to make a choice to stop Davros at the start. That would have created a paradox which could then have played into the whole season. That aside, that was a very good episode.
That Davros is a right tinker, isn't he?
I'm going to see how this pans out, both in part 2 and the rest of the series. I think the events in this 2 parter will have ramifications for the whole year.
There was nothing in the episode that required a lot of explanation for 'new' viewers
I thought it was a bold and interesting episode,and I enjoyed it.