Depends if you want to invest in long term or short term. Most of the coins are made for investors to be happy, but you need to check for price changes and growth on the market. For long term you can invest in Ethereum or Litecoin, and for short time goals, mostly Ripple, OPT, TRX, DeepOnion. Try to invest in 2 places, so if you lose in something, you will win in another for sure.