I would go with the Reef Octopus NWB110 4” Pinwheel In Sump Protein Skimmer just based on ratings, but the only way to tell for sure is to calculate dwell time for each skimmer and which ever one has the highest, get it. Once you get to tiny bubbles which all will undoubtedly have, dwell time for a particular flow is the only thing that matters.
dwell time calculation thread:
http://www.reefcentral.com/forums/sh...ght=dwell+time