Hi, I am the resident AquaOne nutter
I have the 850 (155ltr) and 380 (34ltr).
I wanted the tank you are contemplating but there was a weight issue with me having it upstairs in a timber framed house
I am bias but for what its worth I think the tanks and cabinets are not just a great home for fish but a great piece of furniture for your home
The filter system lets you tweak and do maintinance without disturbing the fish. Also there are no air-lock or priming problems that you sometimes get with external filters.
The filters allow for a massive media surface area and tremendous aireation
I vote 'go for it'