My RLSS R6-i skimmer is acting up and I may be looking to replace it soon. I'm trying to decide between the AVAST Pegleg 180 and the Deltec SC1351. I have a 75 g DT and ~20 g sump with a medium to heavy bioload. My r6i has been okay - never really get a lot of skimmate, maybe half the collection cup per week but when I do, it is quite dark. Which would you recommend between the AVAST and Deltec? Which would be more quiet?