For me the best IEO to invest in 2019 is binance and okex they have always high volume and very secured to invest because many investors are trusting on this exchanges that their investment are really getting profit in the future.
Huobi is also a good choice. I rate Huobi many times better than Okex and Huobi's IEO profit is also higher. In addition to these three exchanges, all other exchanges have failed IEOs and made investors lose
Most IEOs held by large exchanger such as Huobi, Kucoin, binance or gate.io can provide big benefits. Whatever the IEO project held by a large exchanger is always followed by investors because it promises large liquidity and profits