Thanks for the input thus far, guys.
@Loomisjohnson
Those are the reasons that I am inclined in that direction. I suspect that the warmth will match well with the VS-1s, and I've always had a soft spot for high-class tuners (once had a brilliant Accuphase).
@Lloydc
Thanks – that's consistent with what I have heard elsewhere. It seems the the Sansuis are a bit under the radar, but worth considering.
@Chrshanl37
I know that there are some huge vintage Luxman fans out there, but it sounds as though they were/are a bit less reliable than some of the others under consideration. I do seem to recall their components being beautiful, though!
@Chrshanl37
Thank you, Daniel. Which Sansui do you have?
@Swampwalker, @Czarivey
Thanks for the suggestion. It is possible that a long-standing bias of mine may get in the way of the Pioneer option. I don't doubt that some of their models are good, but way back (I was in high school when most of these were made), I used to hang around a nice store in Evanston, IL called Audio Consultants, and Pioneer receivers struck me more as mid-range, as opposed to elite. As I say, there's a bias at work, though.
Cheers,
Tony C.