I believe sentry coin will moon very good! It has great fundamental and their ICO just started. I think it will be the next big thing
Everyone have their own answer depend their analyze and experience. For me, XMR ( monero ) is the next big thing. Even today this coin has low price but has stable volume and also can survive until now. Not like new coin, they need to show their performance before take a part in the real market and everything could happen. Thank you.