although there are so may altcoins, who have good potential and more chances that its price will increase more, for example Etherium, Zcash, Monero and so may, but every one has their own choice, an  expert person always do investment after a lot of study about the coin and analysis, to me my choice will be Etherium, because i think after bitcoin people also try to invest some assets in Etherium, therefore Etherium has some chances to increase its price, and i will therefore like to choose Etherium for trading.