I think there are 2 good altcoins to invest, ethereum (ETH) and litecoin (LTC). Ethereum and Litecoin are also good but with smaller gains, because growth is slow but there is always an increase even if only altcoin.

For me, the two top altcoins to invest now are ETHEREUM and LITECOIN
This coins will compete to the top leaderboard of cryptocurrency someday.
i've been holding this coins for a month.

Why not to buy Zclassic for 7$ now) Its worth around 100$ and the highest peak was around 200$. And ETC ethereum classic looks nice for me for 18$ now.

A lot of people in this thread advise Monero. If you select this alt - keep in mind that bitmain has released monero ASIC. What can provoke different consequences - fluctuations in complexity, prices, a change in the hashing algorithm.

Hello! I think that in the first place among the alt Ethereum, well, on the second NEM, so boldly buy them! They say that by the end of 2018 there will be good X! But do not forget that all your investments are at your own risk! Guys, good luck to all!

I think a good coin to invest right now would be any coin that is more solution based than mass adoption based there are two reasons for that, one of the reasons that these coins are tackling specific problems like energy crisis so they don't give the threat of facing dysfunctionality which is currently a common trend in the cryptocurrency world. For me, IOTA and WePower are the best coins to invest this time because both look good for the future.

For me ICON and NEO.
I believe these two have potential to do Ethereum, so one need to be well position to catch the run up, especially ICON, if they can deliver on what they promise, we might see people abandoning Ethereum platform for the platform

Instead of storing data on your computer, with maidsafe you can encrypt and upload it on the decentralise server. That way no one person can access your data without your permission. It is 100% secure and it doesnt use any space.
once they go live, their price will sky rocket to a few dollars for sure. I really think they can revolutionize the internet so their price should reflect that in the long term. 600$ in a few years.

For me I think waves and ethereum are the top 2 altcoins to invest in now cos you are gonna make good profit when the price increases.