Jeremy from Coral Vue recommended the XP for me. For my tank size, I fall kind of between the 1000 and 2000 models. He said with lighter bioloads, the cone will be more efficient at pulling skimmate than the hybrid design. Not sure how that works, but I took his word for it. Its not quite setup yet, but close. FWIW, my system is about 120ish total gallons, and I like colored sticks