Why feel bad about liking the Ed. 9s even if some people here don't like them? I like my Ed. 9s very much and even more after getting them balanced. I think that the Beta22 I bought from thrice is going to make them very happy. Although they sound excellent on my SDS-XLR, I believe that sovkiller is right that they respond better to solid state for some reason. I have had that experience on other occasions, although it is usually the other direction because some cans (HP-2) only really sound good with tube gear.
Now, on the other hand, even though I have never heard the 780s I am still quite convinced that any positives about them on HF are warped. People whose ears I trust have said they suck and why, so if you don't like the sound of them, then you are proving your ears not flawed.