I've used the D-D H2Ocean Pro+SPS for a few months now and to be honest it's not that much different to some of the other products I've used in the past like TM Zooton or Coral Frenzy.
I've fed my corals for years so it's difficult judge any improvements/reaction from my corals when I try a new food, they just look the same.
IMHO it's an OK product