MRC sucks!! They may have changed ownership since the "little incident" with the last jerk that own the place, the brand name is crap IME and IMO. There are other company out there selling comparable skimmers that don't have these history.
As for doing power comparison. I am not disagreeing with you but I think it would only be helpful in this thread to compare apples to apples - for a 110 gallon tank..
That's 162 watts of electric power difference for 24 hours a day.. I also don't understand what you are getting at with how much water each pump moves as a water pump, what does that have to do with them being used in a skimmer as ways to inject air? I don't see where you are going with this.... I know a properly designed dual beckett will out skim a BK300 (old style), I ran both for a while.. I will also tell you I sold the Barr 4220 and kept the BK300.
Anyway, let's debate on which skimmer is a "better" skimmer for a 110G tank so this guy can get the "best" skimmer.. We need to do this fast, before he goes out and buys Nerureef in lieu of a skimmer because he read somewhere those things are the sh!ts and everyone uses one have a great looking tank (with no pictures). :lol2:..