I typically use PaintDotNET for most things, and occasionally Deluxe Paint II Enhanced for its dithering effects.
ProMotion NG has a lot of the same dithering effects as Deluxe Paint (plus some that Deluxe Paint doesn't have), but I really like the particular pattern Deluxe Paint has. I think it's the result of optimization making the dithering effect imperfect.
If you're looking for recommendations though, I'd suggest Aseprite. It's a really good tool for pixel artists. I'm just too stuck in my ways to make proper use of it.
ProMotion NG has a lot of the same dithering effects as Deluxe Paint (plus some that Deluxe Paint doesn't have), but I really like the particular pattern Deluxe Paint has. I think it's the result of optimization making the dithering effect imperfect.
If you're looking for recommendations though, I'd suggest Aseprite. It's a really good tool for pixel artists. I'm just too stuck in my ways to make proper use of it.