Woahh 87% efficiency all the way
Very nice unit and review.
I have buitl a rig with the TX750w in it and I can tell it isn't that hard to manage the cables, which were similar in amount. You just need to make sure you have a case with good cable management options (I had the CM centurion 590, not really great) and you have a lot of duct tape / tie wraps lying around. Oh and reserve an hour or two