Reference quality line stage?

I'm planning the purchase of the last line stage I'll ever need (as distinct from the last one I'll ever buy...). It's going to be used for two-channel stereo only. It will sit between my Audio Note 4.1x Balanced Signature and a pair of Wavelength Triton Blue monoblocks driving Coincident Total Victory speakers. My opportunities for auditioning units in the price range I'm looking at are severely limited, which is why I'm asking for thoughts here.

My musical tastes run the gamut: orchestral, chamber, jazz, rock, folk, blues, even some alt country. My audio tastes are decidedly single ended triode: I like music that's palpable, fleshy, detailed, open, dynamic, extended and just plain real.

I'm looking for a line stage that's going to give me everything with as little fuss and attention as possible. My mechanical requirements are simple. My minimum configuration would be: single ended, three inputs, one output. I need about 10db of gain. Remote volume control would be nice but not essential. Anything beyond that (balanced operation, remote source selection, tape outputs, HT capability etc.) is OK if it doesn't compromise the fundamental quality of the unit.

The price range I'm looking at is $10K to $15K USD. I have no preference for new or used. The short list at the moment includes the Blowtorch, the VTL 7.5 and the Aesthetix Callisto Signature. I'm a bit hesitant about the Callisto, frankly, because of the number of tubes - it looks to me like there's too much potential for care and feeding problems down the road.

Any thoughts on my three candidates or suggestions for others I should consider are welcome.