I would just add that I think the 1000s are a little bit of a grower - they don't necessarily have the instant wow factor of some other headphones, especially if you only give them a quick listen. I had three lengthy demo sessions purchasing. The first time I demoed them, rapidly switching between the 1000s and a bunch of other phones, I was impressed immediately by their transparency, balance and detail, but I wasn't quite smitten. It was only on subsequent demos that they started to get under my skin and their quality really started to shine through. Also, the heaviness of the LCD-X was indeed off-putting for me - you say you like the weight, but that's actually been a big factor in my never purchasing any Audeze to date.
As for the Nighthawk - your feedback doesn't surprise me. I wouldn't even consider a pair of headphones from a company that specializes in snake oil.