There's so many types of voice-over: promos, commercials, narrations, book audio.
It's hard to pick one mic for all chores.
However, I do recommend the Studio Projects CS5.
It is a high end sounding mic with low pass and high pass filters. Great for taming booming or sibilant voices.
It's multi-pattern and in hypercardioid mode sounds very up-close while picking up little room noise.
The CS5 goes for $350 USD new, but it's sounds much more expensive. Nice timber and natural high end.
Others I own include Senny 416, TLM-193, and SM7B
. CS5 is always a winner.