I've tried several brands of prenatals, for various reasons. I guess Rainbow Light is my favorite overall. Based on whatever's going on with my life/health (like, do I need extra B vits or less iron or whatever) at a given time, there is often a certain level of everything I'd like to take, and Vitanica brand was my choice prenatally and early in pregnancy this time, but now they won't stay down. They aren't whole foods based, so I'll probably switch to Rainbow Light when I'm feeling better, since perhaps they'll be easier on my body. Last time I started with Eclectic Institute brand, again b/c of the amounts of certain vitamins. I believe they had less iron or something. I switched to Rainbow Light in the second half of pregnancy, I think. Perfect Prenatal brand was recommended by a friend, but when I read the label they didn't contain any of some important vitamin, I want to say it was vitamin A?? So at $50 per bottle I vetoed them.
Though not a "prenatal" vitamin, I'm pretty encouraged by good results I had when I started taking Juice Plus (which is entirely food based). I went to an info session led by 2 midwives who were sold on them and they said they almost regretted encouraging clients to "take your prenatal vitamins" for so many years since some prenatals are so unabsorbable and poorly constituted.
I don't like the one-a-day vitamins as much b/c if you calculate the amounts, they always have less of certain vitamins than the 4 or 6-a-day vitamins. If you have a great diet then I'm sure that's fine, but let's just say my diet is only pretty good in the best of circumstances. Right now I'm happy to keep anything down, and the very thought of vegetables (usually they're my favorite things!) makes me gag.
Unfortunately I can't take any of my prenatals or Juice Plus right now b/c of nausea and vomiting. I manage to take a folic acid every third day or so, that's it. I even tried chewing my daughter's gummy Juice Plus which are quite yummy (the red ones in particular), but they didn't agree. Blech!