ETH , MOITA, DASH...

The Coin to invest is the bitcoin only currently Because the price of bitcoin is not going to stop since two month , so if you have bitcoin then don't invest in Any another coin , hold innyoru Wallet , and after the bitcoin price get stable try to invest in another coins which are better for the long-term investment .
So if you will invest in any coin then my strong suggestion for you to invest in official coins that are from the bitcoin fork we got this year .
These are bitcoin cash ( currently price going down , so buy now ) , bitcoin gold , bitcoin diamond .
These are those coins which have no simple Wallet to use , so after few months we will be able to get simple Wallets to use and that will results into increase the demand of these coins and we will make lots of profit easily .

I still think NEO and Waves have a lot of potential and are still undervalued nowadays.
Great projects, NEO is way more faster than Ethereum and if China will lift its ban, this coin will skyrocket.

I think the best investment altcoin for now is XUC and GVT, because the price will increase fast and from the price increase that we can get big profits  .

Steemit is looking promising due to the social networking and content writing is offering users. Monero is also great coins to watch on my list as a result of it use on the dark web and it anonymous nature. My last coin is Ethereum , A coin used by almost all ICO, hence is a must in anyone portfolio.

One of the best option we consider is the price history chart of a coin if it's increasing within due time.
If they're increasing then they deserve to be invested otherwise look for another coin that has the potential to increase their value.

That would be IOTA from the past days it came from cents to a dollar now its getting pump $5 today because it has a lot of fundamental news.

I recommend ethereum and litecoin both altcoins is good for future investment because it has a good price and its growth continues to increase so many are also interested in both altcoins.

IOTA is a good project. Due to recent developments, it is already having a good run, and no one knows how long it would keep going for now. If you are holding for long, you can get in at anytime, but if you are considering looking at getting at a lower value, you may want to wait for some little dip. It is going to be a long run, so I will just say you get in now anyway.