Nuls is a very good altcoin no doubt here, they hold a strong place in the crypto industry for a long time. Personally, I like Nuls and EOS technology very much and I think NULS a bit underrated! But I would not call it a next monster, because Nuls development is less and their use cases are not good enough anymore! I will buy NULS coin to make profits because bull run will boost this coin very much, but yet it is not the next big thing, maybe Cartesi, Energi or Insolar will be the next monster!