I am VERY bullish three Crypto currencies. I'll give you the reasons why.
XRP: Ripple is the banks crypto. FOLLOW THE MONEY!! They will never loose.
XLM: Stellar Lumens is the small bank (Think Western Union and money grams). Will get to any person in developed and especially undeveloped countries.
XEM: Used by people that want privacy. Great iOS platform, ease of use.
All of the three cryptos are in the TOP 10!! Stay with large volumes.