Blended fabrics are often used for corporate polo shirts or grocery store uniforms because the blended synthetics increase durability and stain resistance at a low pricepoint. At the same time, they are less comfortable than all cotton materials, and sometimes they make you more prone to sweating. Usually right in the middle to low end, when it comes to price, these are the most commonly found polo shirts on the market, and if you are on a budget, this is likely what you end up with. If you can afford a better quality, you should do so because the feel and comfort are just not desirable.
Performance polos are made with athletes in mind. They offer odor reduction by adding silver to the material, or they come with UV protection. They are usually made from a lightweight synthetics or blends. Depending on the marketing budget of the company and the brand reputation, the price will vary. These shirts are really only meant to be worn on the golf course or when you exercise but not anywhere else.
While they don’t wrinkle or shrink and are resistant to staining, they also offer very limited breathability meaning you will sweat a lot, and they look quite cheap.