I started using a large 12.9"
iPad Pro (512GB WiFi only 2017 model) for certain hand-drawn tasks. I'm not an Apple fan, but after comparing the stylus performance between the Wacom Cintiq, Microsoft Surface Pro/Surface Pro Studio the Apple Pencil in conjunction with the
iPad Pro won out handily for on-screen drawing. The Surface Studio is a beautiful, elegant PC with an awesome looking monitor. But that made the laggy performance of the stylus that much more disappointing. The Apple Pencil has no lag to it at all.
The Apple Pencil has its own downsides. The thing costs $99, which seems expensive. It is battery powered, although the battery life is pretty good. Just be very careful not to lose the little female to female Lightning connector needed for charging it. IIRC Apple still isn't selling replacement tips and connectors yet (although some 3rd party after market products are available). Still, the Apple Pencil works great -even through a tempered glass screen protector.
I knew there was a decent number of drawing/painting applications available for the
iPad. I was surprised at their inexpensive price (less than $10 for most of them; some even free). Obviously none are a replacement for CorelDRAW and Illustrator. But the
iPad can dramatically speed up certain types of hand lettering and hand-drawn digital graphics tasks.