It is fascinating how launching a (in reason) more expensive model can be so polarising, even to owners of the same brand. Maybe like cars, it brings the 'panic' emotion that they have to find a way too buy it as are 'missing something big' And if they can't buy it, they get super mad.
I think 5/6K USD for a top HP is about right. Lets face it top speakers are 50K+ on up to 200K for some people I know. I haven't heard the Ed6 so can't say it is a top tier HP, but if it is 5/6K is ok IMO.
It comes down to:
1. How keen an audiophile are you? (albeit personal budget constants)
2. Do you see the one you bought as a life time purchase, or are you happy to sell on a buy again?
3. Are you generally not trusting the brand?
The above IMO does not apply when we get to 50K HPs like the Shangri-la mind. That is a different subject.