The advantages of under the bump are that they aren't so bulky under tops and to combat exposure or to allow you to wear a shorter top you can always wear a belly band or long vest top under your top top. Under the bump tend to work better for skinny, stretchy style jeans as the stretch in the denim will hold the jeans on your leg as supposed to having to rely on the waist band only.
Last year a friend of mine was pregnant and she wears plus size clothing. She had a tough time finding plus size maternity wear until she spotted this store. There is an entire section reserved for plus size woman ranging from X to 3X. The plus size selection is great and very reasonably prices. I'm sure if this store didn't exsist, she may have had to stay indoors for the remainder of her pregnancy because she couldn't find a thing to fit her at the other maternity stores in Halifax.
I did all of my maternity and nursing gear shopping here and absolutely love it! Thyme Maternity across the street seemed to be the same in quality but has a smaller selection and is a bit more pricey. I have alway gotten great service here and there always seems to be great sales. In the month right after I had my baby my husband went to get me nursing tanks but the sizes he got were too big and when he went back to exchange them he said is was super easy and they were incredibly helpful. I have also gotten nursing shirts as gifts from there and had to exchange sizes and the gals were so nice about it. In some stores you sort of get the eye roll when you have to go return or exchange things or it even feels like the sales people are trying to make it difficult for you, but that has never happened to me here! Great place to shop :)