Personally, it seems to me that the waves and ethereum are better suited for this, maybe there are of course some more coins, but I prefer these!
In my opinion only two big coins are best for investment. Other currencies will take long to rise up and many people cannot wait for too long. It is better to invest in bitcoin and Ethereum to earn money in shorter time. These two coins are promising although these days the market is not good but in the future these two currencies will give good profit to its investors.