What are the Top name brands for guys clothes?? I know some of them is Diesel, Polo, and JCrew. Is there any other brands??

I'd say it depends on your personal style and budget.

Phat Farm & Gucci represent a wide-range of style and price.

Karmaloop.com - Global Concrete Culture

Digital Gravel

Hi,
I don't know how old you are but here is a list of hip, trendy designers. Very cool... :)
When looking them up online be sure to add guy's clothing or men's clothing to your search.

Pricey but you said "top".

Diesel
Michael Kors (he has stuff for younger guys)
GAP
Jedidiah
Public Opinion
Scotch and Soda
Boss Orange by Hugo Boss
Ben Sherman
Marc by Marc Jacobs
Citizens of Humanity
D & G