If you're looking for a thrifty option, take a look at this Stutterheim Raincoat. It's a popular piece for a good price. Another strong contender for your wardrobe is this A.P.C. Overcoat. While the price of this piece is not very high, it will surely attract a lot of attention. You might also want to consider this Topman Trenchcoat. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.