In case anybody looks for skimmer info in the near future I wanted to add this:
Needlewheel technology seems to be one of the most popular choices right now. The needlewheel impeller can chop up the air bubbles into very tiny bubbles making it very effective at removing stuff because of the larger surface area I guess.
Recently I ended up purchasing a skimmer that promised to be gentler on the plankton. Didn't pay much attention to that claim figuring it's just marketing and as long as it works well I'm good.
Then I read a manual on Zeolite filter systems and came across similar information.
Basically the claim is that needlewheel skimmers chop up too much and are more damaging to plankton than venturi skimmers.
So some companies (including the brand I ended up purchasing) focus more on skimmer body design to make up for the lack in bubble surface with increased contact time and as the end result have the same efficiency as far as waste removal goes without as much damage to the more desirable plankton. At least that's the idea.
Haven't found any lab reports on it but you're welcome to dig some up and post them here. ;)