My craftsman box is fine for home use. I will probably use it for the rest of my mechanicking days (is that a word?). If I were a real mechinic, I would want a better box with bearings on the drawers. They constantly open and close drawers, whereas at home it is just used occasionally.
I have never seen the northern tool boxes in person. I would recommend checking them out well though. I have seen some junk chinese boxes that are just throwing money away.