I"ve heard the NuVista 800 once. I only heard it in balanced mode and it was powerful to say the least, but I went with the Ayre AX5/20 integrated instead. I felt it was much more natural with a deeper soundstage and a much lower noise floor which opens up everything else. I base my Ayre comments on the non 20 version as mine is in the que for upgrade to 20 status. I liked the Ayre over the MF integrated straight up and the 20 version will be much better.
I did spend a lot of time with the version 3 Sophias, Sashas and Alexandria's with the Ayre gear and they all sounded different which threw me off. I felt the Sophia's may have been the most musical. I like a more neutral and musical presentation that what I was getting the the Wilson line although I did like what I heard in specific areas. I need a coherent speaker that is clean sounding with no smearing. That's why I like Vandy's or Avalons or even some of the Verity line of speakers.
I did spend a lot of time with the version 3 Sophias, Sashas and Alexandria's with the Ayre gear and they all sounded different which threw me off. I felt the Sophia's may have been the most musical. I like a more neutral and musical presentation that what I was getting the the Wilson line although I did like what I heard in specific areas. I need a coherent speaker that is clean sounding with no smearing. That's why I like Vandy's or Avalons or even some of the Verity line of speakers.