I see people really did look to see what they can get for about $500 to work with a 300 gallon system. Glad I am not the only one that searches around. True pressure venturi skimmers work great but they require pressure pumps and the pumps can be noisy. Same with Beckett and injection skimmers. When I am looking at skimmer size if it gives a gallon range 200-400 this would be 200 gallon medium heavy load or about 150 gallons with SPS and lots of fish. If they only give a size like 250 gallon and no other info I look at that as light load good for LPS. Don't get me wrong each tank is different but I have had SCA, ETSS, Lifereef, Aqua C, Euro Reef, Reef Dynamics. For simplicity, and ease of maintenance I will take the Euro Reef/Reef Dynamics but if I am ever in the need for a new skimmer I will not look at price as much as how well it works, ease to clean, warranty, customer service. Most companies do not sell the exact same product for years so they become obsolete when you need repaired.