Aaron I tend to disagree, if my return pump failed my four 3300 L\H seios would happily keep every thing alive, the heat from the light plus the heat generated by the pumps would just keep the system going.
And i feel the laguna's are high quality.
I see no need for an iwaki, on a basic set up, also as Pet Planet said its more off the shelf stuff, ppl setting up will buy retail not import pumps and the iwakis arent really available here