Another post that was already ask here in the thread. There's no death to post like this. huhu
Also, if I were answer your question, there's no specific criteria to know what is the best bounty for you to join in. You will only know at the end. Some are good at start and presentation but in distribution of token, it sucks.
I, too, was convinced of this. Many companies collect the maximum amount of money, and when it comes to distributing tokens, then problems begin.