Still its best to perform an IEO in the top exchange like okex, binance, kucoin and the others, we all know that not all exchanges in the market could be trusted but we must take a due diligence before we participate in such selling and buying of tokens, its our responsibility to manage our own funds.
the research indeed must be done on the project even for IEO in binance. because the success of the project is not only the sale of their IEO in exchange, we must know their plan and the possibility of how developers can make their products run and sell on the market.
besides based on exchanges analisys we have to make our own research.OCEAN IEO on bittrex international could be simple example for this case. investors didn't get profits as their hope and even some of them getting loss.always make our analisys to improve our feeling.