hello, i know that each of us have different opinion so i say what my opinion too. for me,the top 10 alternative coins for me is Ethereum,Ripple,Bitcoincash,BitcoinGold,Cardano,Litecoin,NEM,IOTA,Stellar and Dash, this answer is based on the chart and based on my survey that using cryptocurrency too. number one is ethereum because the ethereum has a good performance now it still continue to rising. and the others have a great performance too.