I currently have an iPad Air 2 but plan to buy a Pro in about a month. Any reason why I should get the 12.9" model over the 10.5"? My needs so far are mostly as a laptop replacement when on holidays (just for stuff like looking where to go, booking tickets etc), otherwise it's used around the house for mostly Netflix, websites and such. With the Apple Pencil it will be used for drawing and notes too. I've tried both side by side in a store but so far haven't found any significant use cases for the larger model. If you have both, maybe you can tell me what the bigger model does better.