It's difficult to answer. Time will show who is who, but I personally choose to invest into promising ICOs. Analyze them, just everything, and then diversify you money into 3-5 project, but this works for me. For example, check this project - https://medium.com/@kelvinchain/the-post-quantum-era-of-blockchain-todays-solutions-for-the-world-of-tomorrow-16bdd970f49a