I have the Reef Octopus REGAL 250SSS 10" SPACE SAVING PROTEIN SKIMMER (VARIOS).
I really like the skimmer. One major thing however is that the giant skimmer cup does not unscrew and it is a real pain to take it out to clean it. In order to work around this I am looking into a skimmate locker and a automatic skimmer neck cleaner. Hoping Santa will bring me one for Christmas.