It's difficult to determine which is the "best" crowdfunding platform between ICO and IDO, as both have their own advantages and disadvantages depending on the project's needs. ICOs can provide access to a wider range of investors and potentially raise larger amounts of funds, but also require regulatory compliance. IDOs offer decentralization and immediate liquidity, but may have limited investor access. Ultimately, the choice between the two will depend on the specific requirements and goals of the project.