Thanks Joe, for the link. Very interesting sound...
I think I'm going the mouthpiece route. I just received my Dave Houser Symphonic mouthpiece with a small Helleberg rim, and it does exactly what I hoped it would do...Give my 3/4 Rudi CC a velvety, more "orchestral" sound, while keeping the flexibility nice and nimble. Plus, some problematic notes are playing better in tune than with my other mouthpieces. Low register (down to the fundamental) technical facility is easier for me, too. Like when I wade through some of those Bach/Bixby/Bobo etudes...
SO, I am now planning to order one of Dave's "Solo" underparts and another rim, and see what that does for my upper register. I'm thinking it'll be what the doctor ordered...
Anyways, after watching some Russian player do the Bydlo on a BBb horn, I feel like a slacker...