some years ago, I start to use linux, well is true I get out of scene for a long time XDDD but I Learng how to use some others softwares, Now I know how to use: Photoshop, flash, SAI, GIMP, InkScape, Synfig, Krita, MyPAint, OpenToonz, Pencil2D. And I tell you is fine learng now software, I think that you can use both if you want, every can be used for a diferent things, like flash you can animated more easy than SAI, and with Sai, you can do pics more detail, anyone have some plus that you could use in you art, but if you want to use only one, at the end of the day just try to use the one that make you feeling more confortble like