These 5 coins is what I will be buying and holding in 2018
Dentacoin (DCN) https://dentacoin.com/
Kin (KIN) http://www.kinecosystem.org/
Ripple (XRP) https://ripple.com/
Po.et (POE) https://po.et/
IOTA (IOTA/MIOTA) https://iota.org/
All 5 coins have great potential for every day use across the world in my opinion.
Let me know what you think in the comments below.