Firstly, you have read everything about each ICOs. Learn white paper - find out more about project team, check their main idea, the roadmap and future plans. Thus, I want to take a participation in Mira pre-ICO on November 27-29th. If you are interested look at their announcement page https://bitcointalk.org/index.php?topic=2367768. Then check yourself and if you are ready to invest just do