I have been using a Maxpedition Pygmy Falcon II or a Jumbo Versipack (with a stabilizing strap through the belt loop). They are heavy for the size..but heavy duty materials. I don't carry much in them most of the time.

FWIW, the Falcon II and the Jumbo are offered now in a few "bright" colors.

I have used many packs over the years and really like Gregory, Granite Gear, and GoLite.