I've sewn on many machines and currently own 4 and a lot seem to be made in the same place and just re- badged.
I would check as to which one had the best button - hole system, easy - to - drop feed dogs, as well as buying a quilting foot, walking foot and quarter inch foot. Then you are set to develop into piecing and quilting as well as straight sewing. As for the Walmart brands, I would tend to opt for the Brother.