I personally think , this is gonna be huge!
So why is it better than current decentralized exchanges? As it is been mentioned on their website :
NEX combines the NEO blockchain with an off-chain matching engine to enable much faster and more complex trades than existing decentralized exchanges.
It is good! but then you cant have it all, you can only participate up to $1,000 USD in token sale . ALSO, there is no guarantee that you can participate. Basically they will have a lotteries to define the first group of buyers.
If you are thinking of buying then save the date: 12th of March in your calendar to register for KYC ( know your customer ). Lottery registration closes in 30th of March and the First 25,000 lottery winners are announced on their site.