If you sure in ICO, you can invest. But bounty it without any risk

It so many bounty campaigns now and  it too hard to select the best one

Usually Developers write all rules and conditions in bounty. You need just participate and do all conditions of bounty campaign that you choose. And  get your coins after end of the bounty.

It depends on  the your  will or resources. You can invest if you have the financial resources. But if you din't hae resources you can participate in bounty