I have owned a 22-580 for about two years, now. I run mostly smaller
stock through it (less than 6" wide). From day one, it has produced
beautiful cuts with no 'mill marks.' So the stock can go right to the
project with little to no sanding or use of hand scrapers. Since I am
not doing production work, I just leave the feeding speed at slow. It
is a sturdy machine for a benchtop planer, in my view. I have had no
problems with it. Of course, I am still on the original knife edges -
ie have not flipped them, so the lineal foot volume through the machine
is relatively low.
I attend a local community college cabinet-making & furniture-making
program where we have industrial jointers up to 36". When the knives
have been installed with great care, you see no mill marks with them,
either. But, that is rare. Of course they really can hog off the
material and handle the 8/4 12 foot stock with ease.