What do you think have better future GNT or SONM? They have similar idea and who have better chance to success?
OP one more thing. I see now that many of us SONM supporters answered in this thread. Now you may expect this and discard our opinions as biased. However bear in mind that SONM has competition in the face of Golem and iEx and opinnions against SONM might be coming from their supporters, and be just as biased if not more. What I'm trying to say is you should try to do your own research if you can. It's the only way you can be confident in what you find out.
SONM ICO is on the 15th this month. I think there's plenty of time for you to make up your mind about the project and invest if you find it interesting. Good luck!