If you don’t want to splurge, this Paul Smith Raincoat will fit the bill. It's a great choice, while not very pricey. Another strong contender for your wardrobe is this Z Zegna Overcoat. While the price of this piece is competitive, it will certainly attract a lot of attention. You may also want to look at this Barena Overcoat. This item is not expensive either, but it will make a difference in your wardrobe.
If you're after a bargain, consider this Herno Raincoat. While the price is very reasonable, this piece is an easy wardrobe update. You might also want to look at this Prada Raincoat. It's an attractive option both price and quality-wise. Alternatively, opting for this Raincoat is a wonderful choice as well!