There some way to predict a coin price in the future ill write some ( i copy it from medium, just this poin)
1. Get historical daily prices for 10 top cryptocurrencies
2. Calculate daily returns
3. Simulate a year
4. Simulate a year many times
read here https://medium.com/@spreadstreet/10-price-predictions-for-10-top-cryptocurrencies-february-2018-3816a831ef3a

And my pick is Ripple and Neo cause i have it and like it. Seems promising though, but afterall you should do your own research about it. Me my self not an investment adviser or something like that. I allready read some article that people broke cause they buy coin their friend told them to buy. No shit mate just do it by your self.