Really depends on what you're shopping for:
When in a tight budget - GAP, H&M, and OLD NAVY never fails. So does TJ-MAX and MARSHALLS.
For beach stuff - PACSUN, ZUMIES and OAKLEY is good labi pa ug naay sale. Usahay sa The North Face maka timing ka ug sale.
Casual Stuff - Banana Republic, Lacoste, Polo Ralph Laurent, Levi's .. I shop a lot sa POLO RL `cause akong amigo gives me discount coupons all the time. Lacoste and Banana Republic nindot ug mag sale.. Levi's sab, ug mag sale sila, grabe sab kaayo.. you can get 501 jeans for as low as 15$. Sa Aeropostale ko tig palit ug shorts ug walay sale sa Banana Republic. Aeropostale is a cheap alternative if you're into that trendy teeny/young-adult stuff like A&F or Hollister.
Formal Stuff... well I only have 3 pairs of suits and I got them from Banana Republic, DKNY, and Polo RL and all of them was on sale. Sa mga dress shirts .. I usually go to Marshalls and TJ-MAX kay they're more than half the price compared ug mo adto ka sa tindahan mismo. If a POLO RL shirt mapalit nimo ug $60 sa ilahang boutique, you can get a comparable shirt sa Marshalls for as low as $20.
Shoes - I don't have a specific store for these. Nike shoes mag sale sab usahay as well as Adidas (naa sab koy amigo who works there and can get a 30% employee discount). Pero sa mga brands and shoe models nga di nako makita sa mga tindahan, I go to TENNISWAREHOUSE.COM where I get most of my tennis stuff.
Mga casual shoes, well bisag-asa .. I'm not really picky when it comes to casual shoes compared to how I am sa Tennis Shoes kay my tennis shoes has to be a perfect according to size, stability, and performance. Daghan barato, bisag sa Marshalls ug TJ-Max you can find good deals there. Sa Vans sab ug sa Urban Outfitters, usahay maka kita kag mga bargains ngadto. I once bought a pair of two-tone sneakers sa VANS outlet for $10.
Winter Stuff: The North Face ... this is my main place to shop for my winter stuff. Fleece, Snowboard Pants and Jackets, gloves, liners, etc.... basta Thanksgiving Sale na gani, direcho sa Factory Outlet. Columbia also makes great winter stuff and naay usa ka factory outlet layo layo sa amo-a nga grabe sab sila mo dala ug sale. BURTON sells mostly snowboard gear and accessories... maayo sab ni sila ug mag sale during the off season ( especially sa mga last year's model/designs). Oakley sab barato ra ilang mga fleece jackets and pull-overs.