I should get the predator 15, because on some laptop gpu upgrading is possible but it will always be hard and dangerous. Best choice would be predator 15 if you can afford.
Recommended gpu vs your gpu: http://www.game-debate.com/gpu/index.php?gid=882&gid2=2291&compare=Nvidia%20GeForce%20GTX%20760-vs-Nvidia%20GeForce%20GTX%20860M%204GB
Minimum gpu vs your gpu...