I would not advise you to invest now in new coins, because the market is now in a very bad state! I now invest only 3 projects, but when the market goes up, I will invest in more than 10 projects. Now is a good time to buy such coins as ETH or NEO, I think they will bring a good profit in a few months!
Actually I also invested in a project lately, at first it was very good and have a good potential to grow but now I don't know if I made a right decision in choosing it because lately the price keeps falling to the ground. I think we really can't tell which coin is the best to invest. It is just a matter of tossing a coin you wouldn't know what will come out, wither you win or lose.