I've been up and down with this series so far, and it's definitely not what I expected, but it has to be said that the return of the Mechanoids was nothing short of delightful.  I'm back to enjoying the animation again even if parts of it are still pretty choppy. I do think it is thanks to not having the light of the desert washing everything out like in episode 2.  Whatever the case, this episode looked great more than it didn't and was pretty interesting again story-wise.  These Dalek characters remain interesting compared to the average unit, although I fear the Executioner is gone, at least for now.  A big rebound for me after episode two.