I'd go with a U87 on male voices, and I've sometimes chosen the SM7b on edgy female voices. I've never found a "one size fits all" mic that sounds great on all VO performers.
While it's not a popular choice, I really like the sound of the Sennheiser MKH40 about 18" away from the performer. Really clean, realistic sound (to me, at least). And don't forget Corey Burton's infamous tirade against using the 416 for voice-overs
. He makes some good points... and yet I can recall many, many, many network promo VOs done on this mic, and producers just got used to "that sound."
I recorded at least a couple of dozen sessions with the late, great Ernie Anderson back in the day, and that guy sounded great on anything
. We used a U87 with him most of the time, but I bet he would have still sounded like Ernie Anderson on an SM57.