The Dalek Strategist and Emperor really carry this series.  With their cool designs and actually well-written consistent personalities, these two stand out among a race that is all too often homogeneous and sometimes even a little boring.  They are pretty refreshing though, even if the story itself kind of feels like it is winding down, rather than building to a climax.  The Entity was kind of unremarkable as the Dalek's enemy, but at least the Mechanoids remain fun.  I didn't realize they'd be sticking out but they two have a couple of good characters in the Blue Queen and Red Scientist.