I'd second this. I'm an hobby artist and have played with various drawing programs on the ipad (and gone through a few mid-level wacom tablets before that) and

I'd second this. I'm an hobby artist and have played with various drawing programs on the ipad (and gone through a few mid-level wacom tablets before that) and Procreate is simply amazing. It's an app that couldn't exist without the ipad and it massively increases its usefulness. Procreate is good enough that I don't feel the need to bring any further art supplies (even a sketchbook and pencils) when traveling.