If you don’t want to splurge, your best bet is this Kenzo Beanie. It's a wonderful piece, while not very costly. Another savvy option is this Opening Ceremony Beanie Hat. While the price is rather reasonable, be sure that this item will become a great addition to your wardrobe. You may also want to look at this Canada Goose Beanie. This item is not expensive either, but it will make a difference in your wardrobe.
If you want to splurge on a luxury piece, then what you're looking for is this Etro Beanie Hat. It's more expensive but worth your money. While you're at it, also have a look at this Fendi Beanie Hat. Yes, this item is expensive, but it does not mean it's not worth it. You can also consider this Thomas Wylde Beanie. You won't regret the money spent!