When I did shave with a DE the Merkur slant was my go to razor with either Gillette Swedes or Feathers. I consider those to be the sharpest with the Gillette Swedes being the smoothest.

Derbys, Israeli Personnas, Merkurs are all decent and milder blades IME. Not bad just not as good as the Gillette or the Feather on my phizzog. YMMV.