Which Is the Best Ebook Company for Auth

I’m trying to figure out which  best ebook company​  is actually worth using for publishing my book. Are some companies better for royalties, marketing, or distribution than others? Do certain platforms cater more effectively to indie authors or specific genres? I’m also concerned about hidden fees, formatting requirements, and overall ease of use. Has anyone here had firsthand experience with a company that exceeded expectations or one that fell short? I’d really appreciate honest advice.