What made you sell the Tannoys? Tekton Design is my first move into a full-range high efficiency speaker, and I do have to say they are amazing, especially for the price.
One of my friends have the 1Ci's them and they're nice as well. In terms of replacing VH interconnects with Air Matrix or Revelations, it will depend on how you like your music. The Air Matrix shines across the entire frequency on top of having great bass response. Most interconnects I've come across have some sort of scoop in the midbass, where it might give good bass response but roll off in the mids and highs. The Air Matrix just seems to let everything shine. With the Revelations, it feels like the bass response drops just a little bit, but I think it might just be that it's even tighter than the Air Matrix already is. And to top it off, the highs on the Revelations just can't be beat. The micro details just come out right without sounding bright or harsh. If you're in the NY area, I'm happy to come by and hook them up in your system so you can check em out.
Finally, the Bluesound Vault and Node are great. The vault has 2TB drive built in, and my lossless collection with hundreds of albums only takes up about 400GB. Lots of room to grow. It's been interesting to see the product continue to develop, as there has been a lot of development to the app and interface over the last year. The built in DAC is also fantastic, and if I didn't already have the Cary tube DAC I probably would be just fine using the DAC in the Bluesound. I've got the vault hooked up to my hifi, with a node in the bedroom, and two pulses around the rest of the place. There's no lag between the streaming across all four devices/rooms - it's solid.