Had mixed reactions when I first shaved my head (trimmer at 0 then shaving cream and razor to finish it off) - about 4-5 years ago

After a while (last year or so), did grade 0 -- mixed reviews

Then grade 2-3 -- better reactions

More recently, grade "long" 0 -- very good reactions and have been doing it this way for a while

I guess it depends on the condition of your hair and the shape/tone of your face?