Depend on your money, if you get suggestion from someone else and he give you coin who have potential and will give you a lot of profit but you have a little money, that is very useless. But if you have a big money for investing in cryptocurrency and you choose a coin then you will get a lot of profit. I think the coin who listed on big exchange will give you serenity, no need to worry about the scam and no need to worry that the coi will have no value, just hold for long term and you will get what you want.
It actually depends on the holding or the budget of the person if he or she is holding enough money to support a particular ICO nit actually to support but to earn aslo he weill invest enough also to earn bigger than he expected. So if the ICO suceeded he also succeeded.