Are the sungles @ Five Bellow good?

im looking for some good sungles at a cheap price since im goin to Miami this summer (entire summer) and i gotta buy them with my own money. Im not a little girl though, so i dont want some pink of cutesy sungles. Just normal black and with big eyes. Ive been looking at the ones from Walmart and Five Bellow. which is better/worth it?