I recently upgraded from a Cabelas Ridgeline pack (>6lbs) to an Osprey pack at about half the weight and couldn't be happier. Osprey seems to be the hottest brand on the market right now - they make a good product at a reasonable cost. I would recommend checking out some of their daypack series...probably looking at between $100 and $200 for a pack but it will be lightweight and with enough adjustability that most people should be able to make it comfortable. Many of their packs are hydration compatible too so tossing a water bladder in the pack is easy. Most outfitters and mass market stores will carry them - start with REI or Campmor. Good luck!