The DVs are very low, conservative estimates of the absolute minimum required to avoid gross malnutrition, for the most part. There are some vitamins that it's best to avoid megadosing on (like vitA - beta carotene is safe, though), and it's possible to get too much of almost anything, but any good, brand name, health food store prenatal will be just fine, and waaaaay better than something like Centrum or Flintstones.
I'm actually currently on both Rainbow Light 6/day and New Chapter's - half a dose of each, RL in the morning, NC in the evening. Splits the difference! (Honestly, I just can't afford to go NC entirely!)