i've heard good things about CSP! i'm old, so i'm still shackled to Photoshop . but it's gotten better over the years, so it's worth it now.

i used to use FireAlpaca for a while though, which is open source (free), because PS's brushes used to be terribly hideously antialiased, just so blurry it was like a broken felt pen lol, and I also couldn't figure out how to turn on smoothing But now they include a bunch of really nice free ones with the subscription, and I finally googled smoothing, so I pretty much abandoned FA.

I tried learning how to animate in Krita once, but got really overwhelmed because i'm so used to the legacy page-by-page animation in PS that these timeline things confused me. Which is weird because I actually first learned how to animate in Flash, which had the timeline setup but I'm due for a refresher. Krita in general, like SAI, just really overwhelms me with all the options, and I have trouble learning a new page setup. FA is so much more similar to PS.