I bought my first tux last year. I was looking at some vintage Brioni on eBay and they matched the look you described above. Vintage seemed like a good option as tuxes don't really get too much usage unless the original owner was a bandleader or concert pianist I suppose. At the same time Ralph Lauren killed his Black Label and rolled them into the Purple line. Lots of RLBL went on deep discount so I got a new one there. Slimmer cut than I had originally looked for but it fits well and I can dance in it rather easily.