This is not investment advice, however, I personally go for things that i see being utilized and widely adopted.
what are the people saying about its technology?
and not just the people invested and hyping it up
what kind of security do they have against failing?
IE. partnerships with governments or billion dollar companies.
everyone will be quick to tell you to buy what they have,
and thats great, but there are definitely some big
game changing moves being made (especially in South Korea, *wink wink* look up ICON)