At you're rank i still wonder until now you ask that one, but here's my answer to your question. The best coin ever and most trusted coin in crypto world was BITCOIN, no doubt on this coin i invested here 25% of my salary every month end. Hoping for this that it gives us more profitable nowadays and thank's to bitcoin we have an extra income to fulfill our daily needs.
Beside from that there's some altcoins too have potential in the future i also picking up those top 3 high valued altcoins and i invest these and hold for a long run, these coins named litecoin, ethereum and neo.