ethereum, if my recommendation is safe even if the price increase has started to slow. its safe because almost 90% ico manufacture using ethereum platform, so ethereum in my opinion is still good enough for long term.
Yes Ethereum is the most popular altcoins that had a good platform and great potential in the future, but remember don't put your all eggs in one basket you need to split your investment in other potentially coins just in case.
Yeah that's right i agree with you man, do not put all your eggs in one basket, it means don't put your all investment in one altcoin. It's better to split your money in a different altcoins that had good potential like Ethereum, Litecoin, and Neo.
Altcoin for the future is indeed very capable to generate profits that are far more profitable and able to take precedence because indeed with Altcoin which currently presents considerable profits makes Altcoin very capable of being relied on in the future to become a major coin.