I have the ADV-100 and like it but you have to remember you negate the ability to run a filter sock without modifying the ADV-100. I cut a piece of acrylic for mine to hold a sock , but found that after running it for about 2 days the sock will start to over flow, which in my case meant about 3 gallons of water on the floor. I will be running sockless and I will let you know how it goes. Also note I do have an issue with micro bubbles but I think that has to do with the fact I have way to much from ( 950gph ). All and all if I had to do it over I think I would have bought the R-100