I'm buying my boyfriend a 3DS XL for christmas and he'd like one of the new Pokemon games but I have no idea which one to get him. I'm not very knowledgeable on Pokemon so I thought I'd ask you lovely guys 
So, in your opinion, which one is better? (If there's even much of a difference, I have no idea haha)

So, in your opinion, which one is better? (If there's even much of a difference, I have no idea haha)