My number one pick is NEX. I think it will be very fast and succeed. Today I've taken part at my number two ICO - Effect.ai. I like their idea and it's really in demand. But... I don't know why, the girl who interact with the community doesn't look so solid and experienced as she should be
Indeed, until now, several ICO projects have been successful. Most of them have stagnated after a year or two. Only a few projects can be developed but we also have to be patient.