Went with Red Sea 525 XL. I've had it over a month now but haven't put water in yet. Was waiting for new furniture to arrive to be sure it's in a place we can live with for a long time. I'm also still in process of adding parts that didn't come with the tank (i.e. lights, pump, skimmer). I went with a Vector M1 for return, 3 Kessil 360W Tuna blue LEDs, and an AquaMaxx Co2 skimmer. I still have and a hose and some rock to get before I can add water. I can't wait to get it into full operation.