So, in short, you still prefer to invest during ICO. as for me, I do not like participating into ICO's anymore because most of them are a waste of money and time now. Good technology and product nowadays are not enough to make an ICO succeed in its project specially if the team has poor public relations after their ICOs end. IMO, it is better to buy coins after it got released on exchanges for a while because I will be able to discern more accurately if it is worth holding or not.