Blue Jeans- Silver Tabs and Levis 569s
Under Shirts- Stafford T's (yes they are bit more expensive for plain white T-Shirts at around $20 for a three pack, but I have some that still do not have holes in them from 10+ years ago!)
Dress Shirts- Nautica is quite reasonable now, Stafford makes nice shirts and you can find some decently priced Reaction (Kenneth Cole) shirts if you look.
Casual shirts, jackets, hats, etc. (Denver Broncos team store!!!)