Choosing within manuscript preparation
The three services here address different starting points. If your material is still in thesis form, begin with thesis-to-article support, which decides what each paper claims and what to cut. If you already have an article draft that feels loose, a structure review traces your research questions through each section and checks reporting completeness. If the paper is essentially ready, front-matter support focuses on the title, abstract, keywords, highlights and graphical abstract.
These services are about organization and argument rather than sentence-level language. Most authors get the best result by fixing structure first and then moving on to language editing, so that edited text is not later cut or rewritten.