I'd test out some of your more thoughtful and detail-oriented friends. You may find one or two who you feel are adding value and pushing your work forward. If you're going to pay for someone, it's very difficult to find a good editor. Most "editors" are only used to providing sentence-level feedback and may not have enough context about the subject your writing about to be helpful with content feedback. At Prompt, we find only 2% of the thousands of Writing Coach applicants we receive are good enough to make it into our network – i.e., the writing feedback skill is really hard to find.