Feathers! My absolute go to! I also like Derby. Haven't had luck with Astra, I tried when I just started and they chewed my face up. Maybe it was beginners technique?
As I'm going through about 25 different blades, right now I would say Gillette Super Platinum(Black Ninjas).
I get 5 wonderful shaves from each blade, I could push more but; why bother.
Right now I'm trying a Merkur blade, and I just don't see how anybody could pick it, first shave a lot of tugging and not even a DFS!