LL Bean's "Bigelow" daypack has been a Backpacker magazine's "Editor's Choice." It's my favorite daypack. It's reasonable full-price and last year's model is on sale.
Check out the customer reviews.
http://www.llbean.com/webapp/wcs/stores/...ay+pack&Go=(previous year version - orange one below) Was $79, now $49.99
newest version is $89 (black and grey one below, other colors are available)