If you don´t longer want to care about trading & optimizing your portfolio, Peculium is on it´s way to provide you with it´s AI-engine AIEVE to to this in future.

Just these days they did release these GREAT NEWS!!!

"In the previous article https://peculium.io/crypto-savings-aieve/, we showed the performance of AIEVE with a $1000 portfolio. Indeed, from January 14th to April 14th, she’s been able to increase the value of her savings by 88%. If you put the same money into any single coin instead of investing with AIEVE, you would have lost between 43% and 72% (depending on which major crypto asset you chose).

We had now improved this version. If you want to know how and see this in action, please continue reading and registering on AIEVE website: https://www.aieve.io/user

AIEVE is now able to analyse a large stream of social media data to better understand investor behaviour.

Further details (e.g. "How Real-Time Twitter Sentiment Analysis helps AIEVE?" in the full blog-post: https://peculium.io/sentiment-analysis-aieve/"

There are lots of potential coins I must say but bitcoin is still the best. Ethereum basically is the second and so far a very stable coin. This year this two coins as usual be taking the lead among other coins in crypto world.

I copied this answer from a question I answered earlier.

I will gladly say Leapwithalice.io, I am on their team.

Leap With Alice provides a FREE Augmented Reality creation suite, giving educators the ability to reimagine how students learn. This FREE creation tool (‘Alice Labs’), represents a leap in creative education that transforms the classroom from a passive work environment into an immersive learning experience. Simple drag-and-drop tools and templates present teachers the resources needed to generate interactive content that increases engagement, resulting in a higher level of education.

The ‘Alice Exchange’ provides the capacity to create, buy, and sell enhanced educational content. The ALICE utility token acts as the native currency for the Alice Exchange, as well as an incentive structure, rewarding the creation and curation of quality content. Pairing AR with blockchain technology, Leap With Alice fosters a secure ecosystem where each user’s content, data, and funds are safely stored. Bringing the puzzle pieces together, Leap With Alice creates a world where students learn through innovation and educators earn through imagination.

I think it's:
1. ETH
2. NEO
3. LTC
4. ADA
5. ETC
 

Obviously it's not the best cryptocurrency to invest in, but I think PinkDate is a worthy altcoin to invest in. It could provide a lot of profit. They incentivize investment by paying out quarterly in profit-sharing. Check it out and see what you think. https://pinkdate.is

For All Cryptocurrency coins and tokens

https://www.crypto-coin-x.com/all-cryptocurrency-coins-and-tokens.php

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The only cyptocurrency i think which is the best to invest this year is Ethereum because even though the ethereum is losing this week but i still believe it will recover back and rise to the highest increase before the year ends.

For me, the best and underestimated cryptocurrency is still the ETH. Look at how many projects are done based on ETH smart-contracts. I believe tothemoon and hold ETH.

the best cryptocurrency for long-term success is Neo Eth Iota Tron all these best cryptocurrencies for long term

I will invest in Daostack, atonomy and nex projects. It is not an investment recommendation, but I believe it is a good project. It's up to you, though.