When is better to buy crypto, on pre sale or on ICO? When you buy on presale, you can get good bonuses, however when you buy on ICO you have a better gurantee not to be scammed.
I do prefer buying after the ICO because usually, upon a token is listed on an exchanger, its market value is suddenly falling. An invwstor will be able to invest for less and will have a higher chance to earn profit from making an investment since the market price of ICO tokens are expected to grow after a couple of weeks of being lissted on the exchanger.