Among the list of coin, ADA is the one I will add more to the portfolio. Do you have BTC already? With $4000, you can get one BTC for a start. If you only want to consider altcoin, then I will recommend ETH and Neo.
All. Thanks for your help and suggestions.. as per our conversation.. first i will buy ada ,eth and neo.. thanks for ur support
With my choice, I will never buy the ADA, it is no longer potential and is not worthy for you to invest. Invest in ETH and NEO, just invest in these 2 altcoin and you will certainly be profitable soon