It is very difficult to refer someone to invest in altcoin right now, because I am afraid of someone's complaints in the future if it fails. but we can analyze it the easiest way by looking at the liquidity and objectives of the project. everyone has their own assumptions and perceptions. and try investing according to your ability. but my main advice please don't forget bitcoin as a mother or the most important investment, after that you might be able to vote on the Top 20 at CMC, I think the average has potential.