If you are on a limited budget, your best bet is this Pierantoniogaspari Rollneck. It's a great piece, while not very pricey. Another strong contender for your wardrobe is this Staud Rollneck. While the price of this item is not very high, it will definitely attract a lot of attention. You might also want to consider this Filles a papa Rollneck. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.