I went to the UK dealer, Hi-Fi Lounge (Nr Biggleswade, Bedfordshire) on Wednesday. The owner, Paul was really excellent. He showed my brother and me round the whole place, which is a really great environment. I went to listen to a 3 box Vivaldi with a view to upgrading from my Rossini Apex. Unfortunately, we didn't feel the improvements were enough to purchase the Vivaldi. I think this came as a bit of a surprise to Paul, but my brother and I heard the same things.
On to the topic of this thread Paul has a "reference" system, which includes the dCS Varese. He let my brother and I use the room to listen some music of our choice. He left us alone, and we just played some of our favourite tracks for about 45 minutes. The system was wonderful, and we both really appreciated Paul's hospitality. I was very pleased to be able to listen to the Varese, even though (or even especially though) it is out of my reach. I don't know how it compares to other "top end" DACs and streamers. but I can imagine that it would be purely a matter of personal taste.
The Hi-Lounge is definitely worth a visit. We both had a great time there.