Thoughts on Prenatal Vitamins?

Alex • Married to my best friend and the love of my life -- my Airman. Michigan born and raised. TTC #1!
Hello, ladies! 
So my hubby and I have been ttc. Not necessarily as much or as hard as we could be. I was just curious what everyone thought about taking prenatal vitamins before getting pregnant? I've heard many say that it's good to do so and it could help. 
My other question is what brand I should get. Does anyone have any suggestions? Brands to stay away from?
Any advice is appreciated :). 

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