I choose my altcoin base on my own research about the project because if you were going to invest without researching it was the same like giving your money without return or profit gains.
in any case, the investment without careful analysis, it is almost thrown away the money to the wind. Firstly, you can easily be deceived by hitting a fraudster, And secondly, you can pay attention to a little promising project. So that this does not happen, you need a thorough analysis of all projects.