In general one crafts items with normal materials to get the resists just right. Then one reforges. Then one PoF, then one imbue(if possible), then one enhances.
No, barbed kits do not make the best armor. I believe that the last 2 or 3 steps of looted "artifacts" have more imbue weight than reforged armor.
Also, to be technical, because heartwood adds an extra property, I believe that wooden armor, reforged with a frost saw, enhanced with heartwood would be better than leather armor.