Many good ICO? I have not seen any let alone many, nowadays people no longer care about ICO, it is now IEO here and there, and funny enough IEO is gradually trading the path of ICO. Just like in the case of ICO, they way you research about them, is closely related to that of IEO just that, in IEO, the exchange the token sale will take place on really matters.
So advicing based on IEO, I would say first research about the team, the level of their competence, what they have achieved over the years and if their experience is in relation to what they are building. This is very important, because a team with financial expertise can't work perfectly in a sport project. Also, you have check their community and how active it is, and this goes beyond telegram to twitter and so on. A team that can't adequately update their community at the early stage of the project might find it hard doing so after token sale.
Lastly, their partners and the exchange the token sale will take place on is also important.
Thus, after checking the project and it looks good, then there is every tendency the bounty will look good as well.