Qtum VS NEO?
Both (including NEM's PoI) are actually proof-of-stake (aka PoS) consensus algorithms which
new revelations explain PoS doesn't converge without an oligarchy in control.
Warning: something new which is not PoW and not PoS is coming which will soon make PoS entirely worthless.
PoW will also be discredited, but PoS will be obliterated.
The PoS scams (all of the PoS systems are scams) are coming to their end game cemetary.