do you have good suggestion for altcoins who can do x4 x6 in the next big rally , i do not mean x4 x6 in $ but in BTC ... if i buy 0.5 BTC of this coin the total return need to be 2 BTC ... i was thinking ICON icx and another one ? maybe ontology nano ?
For how long? If youre talking about one or 2 months it will be very impossible to happen. If you're wanna keep that alts for the long term (more than 1 year) i will recommend you to buy BNB or NEO.