I've recently gained possession of a new iPad Pro and Apple Pencil and I have to say I absolutely love them both! In the past I've thought iPad's were lame, just a lesser version of laptops and a glorified version of an iPhone. Now I have opened my mind to these two things and I don't think I could ever go back.
While I'm still discovering great apps to help with my workflows etc, the one I've come to love is Adobe Draw. It's easy to use and the apple pencil is pressure sensitive so it's just like drawing on paper. I enjoy the ability to rest my hand on the screen without making additional and unwanted marks. And one thing that's better than paper in my opinion is that I can simply hit undo or delete and create new layers which results in my drawings looking just the way I intended.