Honestly i don't know about NIMFA tokens , If you want to invest in good ICO's just think and read their whitepapers with informations on it. After you read think on that particular project in relation of the team behind if it is trustworthy to do theprojects and not only a beautiful words to conduct and ICO , i will give only some examples that already finished, Exscudo , Encryptotel ,mobile go, Stratis ,Primalbase ,Tezos etc. those are big projects that you can trust in the future , IMO .