Mach3 is the way to go.....I gave up on electric razors, as my hair is too thick and rough for them.......My hair has the consistency of bear fur....I have to be militant with it.
after several years, i am still loyal to my norelco advantage electric razor. with fresahly washed skin, it gets me 98% as close as a mach 3, without the redness and bumps and skin irritation a closely shave mach 3 gives me.
it works equally well on my face as on my scalp. peeps who get close enought to be to rub the shaved skin comment on how close and smooth it gets me.