My files had been assembled a few years ago using Staples brand colored hanging folders. The folders continue to look good and work well. I tried to add aother brand (TruRed) also sold by by Staples: however the combination did not work well (slightly different dimensions) or look as good. I would use either brand but keep them all the same brand.
The hanging folders were good quality but I did not like the way the label was. It’s helpful to have the label stick up with a tab so that you can see all of the folders’ content/title when you open the drawer.