I recently bought NEM and JNT when the price was at its blood path.  Usually it's advised to buy when the value is too low and sell to the minimum of profit you can get which will satisfy you to the investment you made.  You can trust in top listed coin like bitcoin,  ETH,  ECH,  Neo,  Monero and Litecoin as well.  These coins would certainly bring a genuine profit in short term. You can very well trust in crypto currencies in investing rather than investing on share market and etc.