I haven't heard the Vienna or Spendor options but I did have the Adagios and VR4JR's at the top of my short list after listening to a good bunch of models in the same price range as these 2. I would say that it depends on what your priorities are, although I thought that both pairs were the best in the price category I was shopping in they do have a different overall character. The VR4JR are more full range so if bass is a priority then they will probably beat everything else on your list. Although I found them to be excellent overall, there was something in the top end that seemed to be not quite there as compared to some of the others that I listened to.
The Adagios are more open up top and are effortless and very musical once they have some good hours on them. They do not have thunderous bottom end especially in a larger room but the bass is respectable and not boomy or bloated at least in my room. The magic is in the midrange of this speaker and they definitely shine in this regard. Ultimately they just sounded right to me and without spendig a ton more I couldn't find anything that I liked better. They should work well with either amp, I have used mine with a hybrid integrated(DK) as well as solid state(LFD) and they worked fine with either.
I should also mention that I enjoy similar music to yourself and although I bridge off in all directions the Adagios handle anything you want to throw at them quite well. Not a speaker for metal and so forth though I wouldn't think.
The Adagios are more open up top and are effortless and very musical once they have some good hours on them. They do not have thunderous bottom end especially in a larger room but the bass is respectable and not boomy or bloated at least in my room. The magic is in the midrange of this speaker and they definitely shine in this regard. Ultimately they just sounded right to me and without spendig a ton more I couldn't find anything that I liked better. They should work well with either amp, I have used mine with a hybrid integrated(DK) as well as solid state(LFD) and they worked fine with either.
I should also mention that I enjoy similar music to yourself and although I bridge off in all directions the Adagios handle anything you want to throw at them quite well. Not a speaker for metal and so forth though I wouldn't think.