Nestina accessories are going to be your best bet. At the very least, a starting point so that you can get your feet wet and experiment with the right headpiece.
What I love about Nestina designs are how subtle and nuanced each piece is. They're delicate with some classy bling factor.
The Vines Collection is the latest in Nestina designs that will run you anywhere from a couple hundred dollars and up. Considering that shoes can run you that much (and more), which aren't seen as much as your face and hair, I'd say investing in a beautiful headpiece (or veil) is part of the bridal look and just as important as the dress.