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
Waves is the one of the most popular coins, many people talk about waves, and it
is very hard to miss Waves.
Ripple is rising this weeks, that was expected. Like Waves it is very popular coin, and
many people talk about Ripple, you can not miss it here on forum.
Many alt-coins mentioned in this topic are good to have, I working on my plan to have
many of this alt-coins in my portfolio. I believe that with good choice and right amount
I can secure my future.