There are a lot of good coins to invest in but I think the best cryptocurrency to invest in bitcoin. Bitcoin is the most reliable coin now even the bitcoin price is down but don't worry bitcoin will grow again soon.
that is my insight too, base on my experience and what I read about bitcoin is the best coin to put your capital in, we can expect that the price will be better soon like what happened last year so it is better to take a risk because there is a high percentage to have a good value with the bitcoin price rather than gambling with other coins in the market.