This is a very difficult question to be answered. There are many factors that should research before investing in any ICO. But the numbers are too long and there is not much time for any investors to check those. So checking white papers, time duration in market, user opinion can be reliable sources.
Indeed true. Thousands of ICO are very hard you find which is the best and good ICO. It is really best you research in all forms of social media. Always follow and look for the visible platform of the ICO. It really take a lot of efforts and time to look for a good ICO for investment.