Do you think the 150 will be a huge improvement vs the actual SRO 1000-SSS for my 125 SPS and heavily stock tank?
The Vertex Omega uses a Sicce based pump versus the Askoll based pump of the Bubble King. The Askoll is a much quieter block, and stronger as well. The Red Dragon will definitely run more quiet than what the Sicce will, and the Double Cone will be silent, period, such as your Mini 160. You will also get a much larger range of adjustment with the Red Dragon adjustable venturi than what you will the Omega. The Vertex Alpha skimmers have about a 600LPH our or so range of adjustment on their pump, however the Omega's do not have as much, it's only about 100LPH of range of adjustment. In my opinion that is not all that much of a big deal though.