Hi guys, it's my first post here and first time to buy a MacBook Pro. I love Apple products for their simplicity, gorgeous design, and customer support. And I'm looking for the oldest Macbook Pro 15+ inches (preferably with Retina), that can comfortably run the MOBA game, League of Legends. Which one do you guys think would be right for me? P.S. I'll still be having my gaming PC, so as long as the Macbook Pro can run LoL and do basic tasks, I'm happy.