I choose the bounty according to different criteria, in the first place much depends on the project. If I do not see any further development of this idea, I will never waste time on this project! Secondly, if the bounty program is conducted by a bounty manager familiar to me, this will be a big plus. Thirdly, I prefer to join the bounty only as a pre-sale of the project itself, and I look at the success of this stage.