Brigo, keep in mind that the human ear does not hear in linear fashion.
So
the RCA 44's and 77's that were among the standard vocal mics for many years weren't flat and their effective top end response went up to around 15 KHz (and rolled off well before then). The R84 doesn't go up to 20KHz either.
Without directly hearing your voice in person, another "safe" choice should be
the Electro-Voice RE15. It was designed by EV to have similar characteristics to the RCA 77 ribbon without the potential high costs of ribbon repair.
Close enough to where many radio, broadcasting, and pro studios would dispose of 77's directly into the dumpster as cost of repair exceeded their
value at that time (60's/70's). Then they'd use EV 666's, or later on the RE15. Of course the SM5/7 and Sennheiser 421 have been popular also.
The RE20 "condenser killer" (broadcasting nickname) got that by being issued in order to compete with the Neumann U87's popularity in higher end
broadcasting channels like NPR. It has a crisper top end compared to the RE15, not necessarily better on a given voice/musical arrangement.
In fact, RCA Studios had millions of hit records sold using the RE15 on the lead vocal.
The RE16 and EV 635a were also used, especially because these microphones wouldn't emphasize bass too much on female vocalists.
Am a "bright" 2nd tenor/high baritone BTW and would have no qualms about using any of these EV mics for commercial release if a strong AE is at the
helm. It's the magician not the wand.
Chris
P.S. As the RE15 is discontinued it would be wise IMHO for anyone
interested to snap them up as their value continues to rise,
which has happened (significantly) to the 666 lately.