if I recommend you a good bounty to participate then I would definitely advise you to participate in AIGO bounty campaign, because I myself participated in AIGO bounty campaign, but I don't know whether AIGO bounty campaign will be successful and it will give you income or not, because for now it's difficult to guess the bounty that we follow is successful or not before the bounty is finished and if you ask a good bounty to follow (ICO or IEO) then in my opinion it is the same, because it is not important bounty that we follow using ICO or IEO system, but the most important is the project from the bounty that we follow will be successful and can give us income, so don't care about using ICO or IEO system because the most important thing is the project.