Granite Gear packs (most of them) weigh in at about 3 lbs, the Nimbus series has very adjustable and comfortable frames that let you fine tune to your size, and swappable hip belt/shoulder straps to whatever size/padding you desire.

Nimbus Meridian is on discount all over the place, too. Seen it as low as 95 at REI (that deal is over) and around 150 at Sierra Trading Post. You have a choice between a short and regular - I have a short Nimbus Ozone (same frame) and have an 18" back size. That's the most a short frame will handle, and it adjusts down from there.

It doesn't have a ton of pockets, but that's hardly the most important feature - if the pack fits you, and (like me) you are hard to fit for a pack, it's worth small sacrifices. There has not been an issue with my Ozone and unlike the Meridian it doesn't even have the lid.