All the research should be done before investment. Find some information on some big ico listing or rating platforms such as ICODROPS, ICOrating and so on. And everyone should have his own idea about the project.
There's a new upcoming review platform called menlo.one might as well include them on searching for new ICO projects out there. The good thing about their platform is they are trying to change how the way we look ico review sites, where I think would agree that its corrupted right now.
I look at icorating.com for guidance...had no idea that they could be corrupted! =( With all do respect, how is it that Menlo one cannot be corrupted and other review sites who have been here for years can?