A condenser mic will sound more detailed, and more "crisp", however - if you don't have a properly treated space it will also pick up the unwanted acoustics of the room.
I would recommend a dynamic mic if you are not in a room that is acoustically treated.
Depending on your budget, there are some AMAZING sounding dynamic mics for voice, including the Shure SM7 and Electrovoice RE20.
I've also found that condenser's are better for the female voice than dynamics, because the high end detail tends to come through more. Some dynamic mics have more "boom" in the low end that can help beef up a male voice.
Hope this helps!