The coins to HODL are the ones with solid tech, an active dev team and a motivated community.
I'am totaly agree with that.
More tech adoption = a good dev team.
Indeed, that is almost a golden rule when choosing a coin to invest. Some of posts here are very valuable, I should do more research
I am adding my coins to hodl for 2018 (unordered):
- ALQO
- KZC
- XVG
- Waves
- LYM (if you are a fan of fresh ICO's)
- SHIFT
- Cardano