I prefer the public blockchain. Those coins will build their ecosystems. So i recommend the NEO, EOS, CMT.
The CMT is with the most potential because it is now only 2 times compared to the ICO price. The net of the CMT is ongoing. The speed, fees, security has much improvement than the ETH( the blockchain 2.0). I think the CMT will be the competitor of the EOS and NEO. The back of the CMT is 'five miles'. Also, it is the only admitted ICO by the USA government.