Prior to going sly, my wife used to cut my hair with a Wahl Professional, with a #2 setting. Once she realized that what little hair I had was only on rental (thus, the need to trim the edges was no longer applicable), she passed on that and I took over. Since I was eventually going SLY, I went to a #1 guard and then down to just the shears. In all honesty, I'd be shocked if there's a lot of difference between any of the better shears at their lowest setting.
Later,
Schro