-With all of the slack the Apple Upgrade Program seems to be receiving right now, it may be best to stay with Verizon's upgrade plan.
-Verizon surely has a deal going on right now like most of the other carriers to trade in an iPhone 6 or greater to receive a free iPhone 7. So it could be best to pay off the remaining 3 payments then trade it in?
I guess it depends on your situation.