I have two on my new tank (68 X 36 X 25). They are pretty quiet and the flow is very wide. Easy to relocate is you want to try it in a different position. The controller in not due out till next year, so no waves yet. The battery backup will give you 36 hrs on one pump at half speed. They put out around 3,500 GPH at top speed.
By the time you get the pump, Ocean Motion, all the holes drilled (esp if glass), add up all the bulkheads, unions, ball valves, and potential leaks, the cost is not that much larger. If you would like to come by and see for yourself just let me know. I am in Fairview.
Ken