Which COIN do you think has a long term good fundamental future? Despite the TOP coins, that you think has strong team, model and in long term they will create the value.
Bitcoin is only what I can assure you
This is definitely true. If people are seeking for a long-term coin, Bitcoin is always the best choice because we've already seen how it has grown to be a top coin. As for me, I wouldn't risk on new coins if I want an assurance because I will always pick Bitcoin which could definitely give a good profit in time.