To be a long-term investment then everyone will choose Bitcoin, Bitcoin's increasing price can be a reason because of the trend every year that there is always an increase in prices. I once bought Bitcoin at 1000USD rates and currently Bitcoin price has reached 9000 USD. This is certainly a remarkable achievement compared to other investments. while for short-term investments I prefer Altcoin, many ICO projects are very interesting and we can get big profits in a short time, but Altcoin is also very risky because the price could drop very quickly, For me altcoin not suitable to be made long term investment . Each coin has its own advantages and disadvantages, we should be able to make the most of it.