There is more then one way to skin a cat. I have had a MRC-MR3, ATI Bubble Master 300, and now my Bubble King 250 Supermarin with Planctonite Sweeper on my ~450g system. Each skimmer has it's own issues and at peak capacity they should pull the same amount of skim if you are comparing skimmers with similar variables such as size, contact time, and bubble size. My biggest complaint about the MRC was keeping it in tune for maximum production. Seemed like I was constantly pulling the becketts to clean them because some snail crawled in the intake or a bit of cheatomorpha drifted in there. Then I had the Bubble Master which is a mesh mod, which was fine unless you wanted to turn it off. Constantly trimming stray threads or I would have to blow start the pumps got real old. If I turned it off to feed I would have to screw with the skimmer to get the pumps to start again. I decided to stop screwing around and got a Bubble King a few years ago and it was the best decision I have made on my tank yet. The reason why it's such a great skimmer is because of the Red Dragon pump, high quality pumps make the difference on every skimmer. The skimmer itself is simply a tube you inject bubbles into, how you make the bubbles makes the biggest influence on skimmer performance. Beckett's are popular for commercial skimmers because it's easier to scale up a Beckett then a meshwheel.