Superb! Magical to be close to these things. I've seen a couple at a distance, and got a couple of rubbish long-distant shots, but never close enough to make out the detail.
They are massive. Before you see one, you think it might be hard to tell if its a sea eagle or a golden eagle, but there's no doubt at all when you see how huge the wings are.
As you say, I wouldn't fight one for its lunch.