When you shop this way, you can also get the advice of the sales assistants.
Sephora has a good selection and the sales assistants can help you select a good brush.
Your best bet is to go to an actual surf shop and get help from the sales assistants.
A specialty shop will have knowledgeable sales assistants who can give you good advice and information and steer you to your best purchase.
For best results, you should shop somewhere with knowledgeable sales assistants who can help you find a suit that flatters you best and advise on accessories and comfort.