I rather liked it. While it DID feel like it was ripping Nine's Dalek story, I thought Capaldi still managed not to convey a multi-faceted performance of a guy who's worried that his hatred for the Daleks has overcome him and who doesn't even flinch when that Dalek calls him a "good Dalek" - contrasting Nine's quiet dissapointment - because he knows he's partly right.
Anyway, I loved the pace and the directing of the episode, visually arresting - difficult to do for a minimal, budget-wise, episode, or so I thought. The Pink character is, well, a bit weak, I thought - and the moment when he cries in the classroom was, well, awkward. Not sure what to think, but so far, not exactly impressed.
Overall, 8/10. Capaldi and Coleman sell once again, and I liked the idea of a potentially "good" Dalek. However, Pink's iffy.