XTRABYTES for me.
I beleive this project can overshadow Ethereum. Driven by community its already a top-100 in CMC.
The idea of blockchain 3.0 with proof-of-signature and super secure data storage is great.
If devs somehow lower transaction fees (which they will do), then XBY will explode. Mark my words.
This does look interesting as you say. XBY could be groundbreaking but as yet no top developers have done a peer review as far as i know