If you're a thrifty spender, your best bet is this Scala Driver Cap. It's a fantastic piece, while not very expensive. Another strong contender for your wardrobe is this San Diego Hat Company Driver Cap. While the price of this item is competitive, it will definitely attract a lot of attention. You might also want to consider this Kangol Flat Cap. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.