if I think a good coin to be used as a short-term and long-term investment is ETH, because I'm sure the price of ETH will definitely increase and of course it will provide profit for investors, besides that I also believe ETH will take back its position from Ripple (rank 2 in coinmarketcap), so you don't need to hesitate for investing in ETH if you want to get profit for short term and long term, because ETH price will definitely increase and give you profit.