I have a couple H&M chinos I picked up for $7 each on clearance that are perfectly fine if you like slim fitting. Also can't go wrong with Lands End Canvas, Banana Republic, Gap, J crew. All depends on where on the spectrum of slim fitting you'd like to be. In terms of quality for the price, L.E.C. is the best I have experienced in the under-$40-on-sale category.
Check out Bonobos if you are willing to spend a little more.