Same question as in topic.
Where you invest your money today?
Btc, Ltc, Eth, Lisk or what?
I think if I get 500 $ I will invest it in bitcoin because I think the price of bitcoin will continue to rise up again and again... So I think the chances are bigger in bitcoin ...
For your 500$ you can invest in a cheap altcoins that has potential to grow like DTRC which has getting pumps as the price climb at $0.02 or try NCASH. Although it's risk but if you can manage it properly you can get profits.