You can read tons of articles and threads that are suggesting that they are going to be the "next bitcoin" and its up to you if you'll believe them. Many has tried it before to claim that but never succeed. Do your own research and that will be your own tool to determine what coins are worth it.
Yes, I have often read a lot of articles since I joined the investment in cryptocurrency, but many of these authors and media have also been bought by the project side, so I can't see the real quality of the project.
In April of this year, EOS was very hot. The media also said that it was very good, so I also invested a little. But after EOS went online, listening to a friend who developed it said that it is very difficult to use. In fact, there are many shortcomings, so we all have sold it. Maybe reading the article is not as good as listening to the opinions of the developers
And they'll give it 5 stars or "good review" after buying them. You can have your own preference on where you are comfortable with and if you found one to be interesting and trustworthy, search them and have a case study if its reliable or not.