Asides bounty hive, I would advise you try bounty platform. I actually got to know bountyplatform.io even before bounty hive and in every way; they still stand a lot better than bounty hive.

Although, in terms of project number, one may not actually get much, but at least, the few ones you are going to see will be worthwhile and since everything is automated, there is a table that shows you all your stakes and activities directly every day as well as the general table that shows every other person participating alongside their stakes, and that is a high level of transparency to ever get as far as I am concerned.

When the criteria for a best bounty platform will be defined and not in terms of quality manager like timely responsive manager with accurate stake calculations then best bounty will not have any differences from finding best ICO to invest with. We may follow same types of filtering out the projects.