Well, the streetwear forum may be your best bet, but I'll get you started.
Jeans - Mavi. They look as nice as the more expensive brands, and they aren't all torn, destroyed, etc. $70-80, but you can find them on sale. I got mine from Nordstrom's. Best fitting jeans (for me) that I've ever worn.
T's - American Apparel. Very soft cotton, numerous colors, $15. They have a website and several stores in the U.S.
Shoes - zappos.com has most of the brands which will interest you. Personally, I like the Onitsuka line from Asics. Free shipping and returns on everything from zappos.
You also should check out coolhunting.com for new shoes/t's/etc.