Ethereum 

Ethereum recently almost doubled in price and the technology is still new and underrated. In long-term Ethereum can worth more than Bitcoin and it is going to happen in a few years. Reasons to grow:

• applications and tokens
• implementing Ethereum into various structures, such as banking and government 
• Vitalik Buterin is a strong and determined entrepreneur, reliable and trustworthy. This is the main point of Ethereum, that's why it should take over Bitcoin and Ethereum Classic. Because it has a genius standing behind the technology and pushing it forward

Ripple

Ripple is supported by a lot of banks even now and its price increases. Just imagine, if thousands of banks will collaborate with them? It will boost up to the moon! 

Aeternity

Aeternity is still now alive and you can participate in the ICO. The project solves the main problem of blockchain right now: scalability. The solution is elegant and simple. The system uses blockchain online disputes, otherwise transactions are done in private channels. 

Waves

Decentralized exchange and humane way of dealing with clients. For example, every product of the Waves has a simple GUI interface and I have never experienced the creation of my own tokens so simple! Also, the system is close to Ethereum in potential but of course it won't be priced as high as Ethereum, but nevertheless, it has some prospects. 

Bitcoin

Yes, bitcoin is the last on the list. And the least. Because it is just a currency, it doesn't have all this features mentioned previously. Bitcoin is just for newcomers. Well, this is why it is still worth putting money on it. Newcomers have always pumped the price of BTC, so you are going to ride these waves! :)