The band saw is better for roughing in shapes and cutting stock. It is fine enough for you to rough out scale blanks with. The scrol saw ia for cutting tight curves and very fine cuts. You will find a band saw to have much greater utility for all around woodworking than the scroll saw.

That said I love doing scroll saw work, its fun cutting out intricate shapes with micrometer accuracy and I wish I had the spare cash to own one myself.