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, I really agree with you.Ethereum has a good platform and smart contract so ethereum can survive until now and of course has been very popular and has a lot of fans.So ethereum is still worthy of being a long-term investment because altcoin is very potentially good in the future front.