Best integrated amp up to $6000?

Prefer tubes. Like detailed, transparent sound, 3 D holographic soundstage. Mostly listen to jazz small ensembles and acoustic music(piano and Guitar).Thank you!
There's a Viva Solista LT up right now for $3100. These don't come up for sale very often.
you may want to advise as to what speakers you are running and how efficient they are as their power needs may assist in narrowing down the available choices/recommendations...
IMO (and it is a value judgementb admittedly) a used REGA OSIRIS = a real Goliath killer