With my ODS I used an OTC from Walmart (can't remember the brand, they don't carry it now). With my YDS, I could only tolerate the Target brand of the one-a-day prenatals. I tried all the dr's samples, and a couple different OTC's. They all made me sick. I also had to take vitamin B6 with it, and I could only take it at night immediately before bed.
My point is, it varies from person to person, and even pregnancy to pregnancy! Just try one, and see how you like it. I tried comparing labels to take a vitamin with the most of what I needed, but it came down to what my stomach could tolerate.