i think best icos are the one with a minimum viable product in the market right now as i see there is a lot of undervalued coin from 2017 good luck for all investors with their holding in the long term 
I would rather agree if I directly buy coins in the market to be traded, because the simpler and profit gained can be known quickly. Different if you take ICO, you must be patient and wait for a long time.In my opinion, coins that are eligible to be traded are Litecoin, BNB, Ethereum and Dash. For now, the coin is very prospective. The benefits are not as big as bitcoin, but there are still profits that can be obtained continuously.