Well I am not really familiar with Dorco but uncorked Feather sure gets for my skin irritation.
Jarmo
Feathers are insanely sharp. They go through whiskers like hot butter. I used Feathers for a few months, but went back to Derbys and IPs. Lately, I've been using Merkur blades, and they work fine for me now, though at one time I thought they were too dull. I haven't tried the Dorcos either, but I think I'll buy Red Pack Personnas next.