I voted 5, but it falls between 4 and 5.
My preferred daily attire is a good pair of jeans and a nice shirt (polo or button, makes no nevermind to me) with my boots. The boots, by the way, are probably nicer than most pair of "dress" shoes folks wear.
I am not at all wild about suits or dress slacks one bit and only wear them to church or other occasions which would require them. But just FYI when I do dress up, my preferred knot is a four in hand, probably because that's what we had to use with our bravos and alphas in the Marines. Not a big fan of the half-windsor, and I've never tied a full-windsor in my life.