I was also set on buying the He-560, which I have not even heard, but I had decided on the strength of the reviews alone... I've been biding my time for almost a year now, waiting for the right moment to pull the trigger... And then the he-1000 happened! Now reading these rave reviews and impressions of the He-1000 has totally slaughtered my interest in the He-560, to the point where my trigger finger has gone completely comatose on it, even though, and once again, I have heard neither of these two cans personally ... What I know for sure is that if I were to get the He-560 now, not a day would pass without me thinking about the He-1000, and wondering "what might have been." And that, simply, is not a great way to enjoy cans one has newly bought, so why even bother... Hell, I recently had a couple of great chances to buy a Beyerdynamic T1 at incredibly discounted prices, and I passed on both for the same reasons (i.e. they're just not the He-1000).
Now here's the other part of this little sad drama... The he 1000 is way over my head, budget-wise, so out of my league that I would have to spend another year or so saving up before I can get it, even if I decide to buy it used... So my loss of interest in the He-560 has left me in a sort of limbo... I am not necessarily without cans -- I have got some so-called "mid-fi" cans: the Hifiman He-500, and a ton of Sennheisers, including the hd700 and the hd600 in my stable, and while they do a fine job when needed, I have worked up so much enthusiasm in past year about getting new summit-fi cans this Summer, that going back to them empty-handed (without something new) feels rather disappointing and anticlimactic.
In short, reading about the He-1000 has left me in a sour state of mind, although it normally shouldn't ... I'm just venting for now, I'm sure this moment will pass... In the meantime, I wish I could heed the wisdom in the old saying : "be content with what you've got." Unfortunately, I just can't... so that is where things stand for now...