There're a couple of coins out their suitable for long therm rather than short therm investment. projects, with a real team behind them and a promising developing plan.I'm a big fan of Monero, I bought it when it was at it's cheapest and I still have it, yet to be touched. I also just recently invested in Tio, a very solid project with only 450000 tokens in circulation. In case you haven't heard about them yet, here's a link: https://bitcointalk.org/index.php?topic=2066861.0 Anyways, there're hundreds of coins out there, take your time and do some intensive research, don't just follow the masses  and good luck!