Being a newbie, I have only tried a few blades. I can say that currently my go to would have to be Astra SPs.
ASTRA SP is the best blade I have in stock at the moment. They are sharp, comfortable and the quality control seems to be more consistent than with Derby Extra and lately even Feather. I understand the factory that produces them is owned by Gillette and is located in St. Petersburg, Russia. Good Shave all round........
Personna labs. Gillette 7 o'clock black. Feather. This could change weekly when I rotate a new blade in.