I am UK based and have been fortunate to have been demo'd the VAC Phi Beta 110i on quite a few occasions, as a result of a friend owning one.
I have been familiar with my friends system before the VAC was introduced and have heard it in use with both Vinyl and Digital Sources as well as ESL and Cabinet Speakers.
Being a member of a HiFi Group and having meetings at different homes, I have heard other Amp's used in this system as well.
The VAC is not a Amp' that reveals an individual sensitives to frequency extremes. It is not bloated or overwhelming in the bottom end frequencies, neither is it a Lean Sounding Amp'. It is able to encourage long periods of listening without creating detractors.
The VAC I am referring to can be found for sale on occasion, very close to your preferred $5K.
I feel very confident in use, it will be a very attractive experience and one happy to be lived with for a very long time.