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.
I do agree, the above coins mentioned by both you are very good in the long term because all the coin have active developments with active updates and generating very good volumes in the market will always help the coin to increase it's value once the market starts recovering.