Protection and safety comes first:
For cyclists, the best form of protection is to be seen clearly by other road users; to wear high-visibility clothing and this is where riding shirts come in. Most cyclists wouldn't dream of riding in a high-visibility motorcycle riding shirts around town as many of them are really bright, during the day or just plain cheap looking! But these are exactly the reasons why you should wear them; so that a truck driver waiting to pull you out at a junction can not overlook you. So find the jersey you can buy the most colorful and easily seen, and be secure.