I love these, they look amazing. My favourite part is that they are PTFE and PFOA free which gives me peace of mind.  They are truly non-stick, however I have not tried them without oil/butter, but I have only had to use a minimal amount of oil/butter. The instructions say to grease them with some oil before first use, I poured a bit of oil into them and wiped it around and left it over night, then washed them, I feel that this step shouldn't be skipped.