Earn money @ Zero risk.Doing bounty as part time job is awesome.They may be not profitable as previous year,but still we can earn fair amount of money from doing bounties.
Investing in ICO needs money and if you don't have that then might as well invest your time in doing bounties and be able to obtain the coins. The difference is that when you are doing bounties, you are not assured that you will be receiving anything since anytime the bounty may be canceled or something might happen that will let you not receive any coins and when you bought in ICO, you know you will receive your coins unless you are scammed. Anyway, I would choose bounty now because I don't have the means to have the coin through ICO.