Transparency is one of those things which are really important to me. I want to get the feeling that the company openly shares their info and that their website is well structured and provides all the most important information. I also try to find the team members on Linkedin and check their profiles. For questions you have the cultural places telegram chat is probably best. And definitely check out these independent review websites and make sure you understand the criteria they are reviewing with. When will your project hit the exchanges?