I own both a Feather Artist Club SS and DX Kamasori style razor (plus about a dozen straight razors in my rotation as well) so I'm fairly experience - plus I have a course beard and sensitive skin.
Regarding SE blades, I've used them all. I use to use the Feather Professional because it was what most SE seemed to recommend. About 6-months ago I switched to the Feather Professional Super and haven't looked back.
These blades are certainly sharp, but IMO shave most like a true straight razor, assuming a true shave ready properly honed blade. I consider their sharpness even smoother than a Feather Pro because of the end-game of efficiency which works well for my beard and skin combo - assuming one uses the razor with some skill and care. For the Feather SS and DX these blades really behave very close to a properly maintained straight blade. The key to a great SE shave in IMHO is building a lather for maximum glide (more water) and not so much thickness.
Keep the Feather Artist Club or Kai razor sufficiently wet and rinsed. A thick lather that is too dry isn't your friend with these types of SE razors- thinner is better!