Thanks to all for your expertise. I'm a graphic designer; my focus was always more on illustration, but I've learned a LOT that I needed to learn about typography by lurking here.

Here's a question:
A while back I bought Body Copy Sans Pro by Bergsland.
http://www.myfonts.com/fonts/bergsland/body-copy-sans-pro
It filled a gap in my text font collection; I had no "elegant" formal sans for such things as an invitation to a classy event; all were more utilitarian.

I use the font way less than I expected, because I'm uncertain what display or headline font to use with it. I'm concerned I'll choose something that clashes; contemporary display fonts don't look right at all.

What harmonizing headline font would you use with this body font if you wanted a distinctive, elegant look? What about Sigvar Bold?
http://www.myfonts.com/fonts/softmaker/sigvar-serial

Or something like Bernhard Bold, even with the swash capitals?
http://www.myfonts.com/fonts/bitstream/bernhard-modern

I was also considering one somewhat decorative with an Art Nouveau flavor, Letterhead Fancy Caps or Beaumarchais...Am I completely off base?
http://www.myfonts.com/fonts/coffee-bin-fonts/letterhead
http://www.myfonts.com/fonts/scriptorium/beaumarchais

What about an upright script like Adore or Serena or even Pendulum?
http://www.myfonts.com/fonts/canadatype/adore
http://www.myfonts.com/fonts/canadatype/serena/
http://www.myfonts.com/fonts/canadatype/pendulum/

Thanks in advance for your help! ~ Dina