Pundi X - good product and really has a superb team, still holding some of it on my wallet. I believe they can be good altcoin in the future foe having a real product around the globe.

Harmony - Scalability and fast network, though they are still started I think the team who came from different big companies can really create a platform that lack the previous projects.

Binance - I like this cause they are the number 1 exchange and most voted as good IEO launchpad. Well trusted eversince I think they can go high in the future.

Two mores are ETH and XRP. No need to state but these two are sleeping giant that could beat or rival BTC.