both are important, if we look for coins without looking at the rankings it will be difficult when doing research but when investing without research then we could be trapped with problems in funds and time. we must really do well before investing
do not always look at the ranking when you want to invest. some of the coins that have the best ratings but have experienced very significant price reductions. monitor promising coins from product development because a product will bring to price increases. and monitoring big news on every coin before investing is a pretty good thing in a bloody market like now.