I use a Wacom tablet, mostly for retouching in Photoshop. The pen is invaluable for this, in my opinion - and I'd want it for the kind of work you are doing. I turn off all the buttons and dials on the tablet and the pen, and use the computer keyboard to select tools and adjust brush sizes and softness using keyboard commands. Pen in my right hand, left hand poised over the keyboard to change tools, etc.
I had an older Intuos III for many years and it finally just wouldn't work on my new Macbook Pro. So I got an Intuos Pro, the medium one. It works, though Bluetooth operation is slow and buggy and drops all the time. So I use the extra long USB cable, which is sort of a pain but it does work. I don't like the new pen tip as much, but it is what it is.