My suggestion is, buy these coin or token which price down now and have a great future in 2018.
Bitcoin, Ethereum, TRON, Electroneum, DeepOnion, and PRiVCY are always good for long-term investors.
Everyone has his own choice. You like these currencies for long term investment while I want to buy bitcoin and Ethereum and Ripple for long time. These are the top three coins in the list of cryptocurrencies and also very reliable and authentic. The market value is higher than all other currencies and in the future I can make huge profits from these coins.