Stand, 100% of the time, more or less by design. The aquarium is more or less located in a "traffic" part of the house, not near any natural seating areas. I went with a tall stand on purpose to accommodate a standing view without having to bend over. I figured I'm pretty much going to need a stool or ladder to reach in to this monster no matter what height the stand is at, so I might as well just put it at the optimal height.
I don't remember how tall the stand is exactly but the top lip of the tank is maybe an inch or two above my eye height which would mean the stand is around 42".
Ironically, I'd like to feature emergent plants and driftwood now that I'm switching to FW, which creates a bit of a conflict since a lower height would be better for that.