If there is enough vibration present that your fish react, it might be posing a problem for your corals as well (I can't imagine it would be good for any part of the tank.) I think I'd try to isolate and eliminate the vibration. A rubber mat below the pump and short section of flexible line between the pump and hard plumbing would probably help (assuming the return pump is the source.)
As for flow, I too prefer the wider flow patterns of the Vortechs, but they can be a bit louder at higher power settings. As I recall your tank was beautiful - I don't think I'd change much.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man. - George Bernard Shaw
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