For me I still prefer bitcoin since it is more profitable but if you want other alternatives, I think next to bitcoin is Etherium or bitcoin cash. They also have future since many investor are also interested on it.
Bitcoin is at the top of the list.Bitcoin is the leading cryptocurrency today.No other cryptocurrency is near to bitcoin.In the last nine years it has faced many ups and downs but its price has reached a new height.It can give competition to fiat currency,not now but maybe in the future.Bitcoin gives profit in both the short and long terms.For short term earnings,you can invest in bitcoin.For long term earnings you can hold your bitcoins and wait for the price rise.