Mostly, if you want to get more tokens, so you need as far as possible to participate in more unpopular ICO project, then you can get more tokens, so you to join this bounty thread the profits may be the highest.
But for non-popular ICOs, they are risky; Now many fraudulent ICOs are born, If you want to participate in them, requires us to have extensive knowledge of market analysis. Many webstie sites also support the quality analysis of a potential ICO project. But personally I only like to participate in the famous ICO project. The chances of success are high.
Choosing a good bounty project is very similar to the way you choose ICO to invest because you probably will not want to participate in a bounty project within 2 to 3 months and get nothing from it. So choose a good ICO project and see if it has bounty programs or not to participate because you get what and how the results depend on the success of the ICO project.