I own the 306/200, I previously owned the MF A3. I haven't
had the pleasure of owning a Nu-Vista but i did audition it
The N.V, I thought was a bit more resolveing than the Cary
but drier and colder. The Cary has more of a tube sound than the N.V. even though it has tubes. To me The Cary makes cd's more listenable and musical.
The A3 was a bright and fatigueing player, even with my ProAc Response 2.5's which are a fairly mellow speaker.
The Totem speakers are revealing and not exactly on the
warm side, but excellant speakers. That being what you are acustomed to, you would definately hear a differance with the Cary.
I have Mani II's, and ProAc Response 2.5's speakers. The Cary is just sweet with both speakers. Warm and musical
with the Proacs, beautifull midrange, endlessly enjoyable.
With the Totems I lost that midrange sound but gained resolution across the board. But the Cary still kept things
smooth and enjoyable and a bit on the warm side.
I could live with either of the choises, but I would choose
the Cary again. It is the more flexable of the two to me.
Plus it's not the darling of the magazines either, I seem
to like that aspect also.
I am obviously no reviewer, but I hope this helps a bit.
Happy New Year!