Watched episode 4 last night, and episodes 5 and 6 tonight. Will have to go back and do it all again with the commentary turned on. But it really is very good, after all this time. The whole thing is very much Davros' story, rather than that of the Doctor or even the Daleks. The last few scenes, where his creations turn on him because they are doing what he made them to do, are superb.
Pity? I have no understanding of the word. It is not registered in my vocabulary bank.
I wonder if The Deadly Assassin would hold up as well?