"If you are looking at packs with suspension, you may as well look at....the Osprey Exos packs."
Oh yes, the Exos is the most comfortable pack I have ever carried (except maybe the LuxuryLite), even though the hipbelt doesn't appear to be very heavily padded. At just over 1kg, the Exos 58 has plenty of room for a canister and everything else (kitchen sink anyone???). I loaded an Exos up to 16kg (35lbs) and carried it for 4 hours. The weight was dreadful, but the pack stayed comfortable. If loads are gonna be heavier and large, it's really a pack worth considering!