What is your favourite (2D) digital art program?

I use the Affinity Suite (Designer, Photo, Publisher), depending on the project type.

 

Clip studio is amazing, but I do find that for the bulk of my coloring, I switched between that and Sai, and then finished up on photoshop for some overlay affects.

 

I used to use Photoshop but I switched to ClipStudio many years back and I haven't looked back since. The cleanness of the lines, the intuitive ease of the UI, and the helpful tools have really made it both quick to pick up and effortless to use. I do sometimes miss some of the fancier effects from PS, but for lining and coloring - and even simple animations! - it's the best overall program for me, with the least amount of fuss importing and exporting between multiple programs.

 

I'd be inclined to try other programs, but as someone in graphic design the Adobe Suite is still the standard for most industries so I'm stuck paying them an arm and a leg forever.