Steve, for blisters or sore spots on the ball of your foot, I would check out what insole you are using, specifically the material of it. I do a lot of my running in shoes without any insole, and usually without socks too, and i notice the balls of my feet get very wet, and then turn white are sore. I attribute this no water/sweat not being absorbed and distributed by socks or insoles. When I add socks the problem lessens, and with insoles it disappears.
Maybe the superset orange have a very plasticy, nonabsorbent top surface?