Are you one of those people working in both 2D and 3D ?
Autodesk provides Sketchbook Pro, a very cool piece of software.
It’s ideal for drawing and sketching ( concept art or storyboards ) in preparation for your 3D work.
You can now get a perpetual license and pay per month, getting free updates as they arrive.
I have worked with several programs but this is my favorite so far.
Check it out ! Click here for the website