AmaZix are good. At least got not scammed with them. Almost all campaigns are paid on time.
Clear rules, and objective evaluation.
I think you are not aware of dealjoy project and 2, 3 more projects who scammed bounties even Amazix was running them.. the fact is amazix is also not trustworthy when it comes on bounty programs.
you should always do your own diligence and join a bounty on your own risk. and do not blame a bounty manager.
It is common for all the bounty managers so we should not blame the managers because it is reach softcap surely it was listed in the market. My suggestion is bounty participation is little so we must carefully read the OP then only involve in any projects. Nowadays Yahoo is good signature and Bounty manager they run buzzshow bounty campaign but it is still not listed in the market. So don't judge the project scam we should analyse only responsible manager.