What piece(s) of equipment would you most like to try?

Nothing that I would never be able to afford or want to spend on.

Arc ref 210's, ref 5, and Wilson Sasha 2's.
nice and fancy, but relatively realistic as well!  

So, realistically thinking, I would  first audition couple of integrated amps, Gryphon and Ypsilon come to mind. I don't need no Rowland or Pass or Accuphase. Then, Nottingham Anna Log turntable and a SME turntable. And speakers, I don't know, I would listen to anything under $25k. Echole cables.

Anything from Kondo/Audionote Japan.

I meant no Rowland etc. mentioning integrated amps not their top of the line offerings. Same with VAC. His integrated, as excellent as it is, won't give me enough drive. Gryphon Diablo, $15k I guess, would be kind of inexpensive choice. Ypsilon hybrid is $25k. But frankly, I would go with older separates from Gryphon, Lamm, Vac, Rowland or Pass for about the same cost, but not for $15k I think unless I am very lucky. It is much more difficult with speakers.