What made you pick a particular coin to invest in? Is it one factor or a formula of several?
I bought Bitcoin and Ethereum because they were the most popular. Now I want to invest in one or two others. My first thought was to pick ones that are dedicated to a sector like KodakCoin targeting photographers.
Ed
For me when I was investing the decision was not very hard to make since everyone was already investing in bitcoin so all I had to do was look up the best cryptocurrencies and then bitcoin was it, researched into it, decided that it would be a great coin to take a risk with which I did and I did not end up regretting that risk.