For what? Shirts? Shoes?
What kind of guy is he like?
Do you want him trendy or a little different?
Will the clothes be for going out or for casual wear, or kinda in between?
Does he even care about brands?
If I buy clothes for my boyfriend for him to go out, I (occasionally) go and buy designer stuff. He wouldn't have had a clue about the label, but he likes the idea of it.