Hello, I’m not a industry pro and I bought CSP and Affinity Photo. I usually color scanned drawings (ink or pencil) and I work in A3 "big" size (I am a comics artist and a page can be 50 cm big) . With my old gamer PC 8Go Ram, Affinity has big problems to manage such a size in 300dpi. CSP has better management of memory. And I think CSP is very ergonomic and you can customize a lot of tools and shortcut (the selection tools are the best I met). But CSP does not manage CYMK and it’s something I need for professional printing. And for some reason, I prefer Daum brushes in Affinity Photo.