There are lots of criteria to choose a perfect ICO. Firstly, technology behind ICO. For example iota and streamr have the same technologies, both of them about IoT (Internet of Things). Which will be successful, we will see later :)
Second criteria is; the money which is collected in the ICO. It is very important for the coin's first market value. The other criteria, how the coin's software technology? It's also so important. Let's talk about the perfect ICO's.
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Best ico i ever seen !