For what it is worth:  I have carried all of my rescue gear (approx. weight 75lbs) in a large surplus ALICE pack w/ frame for about 6 years.  Prior to that I used a general backpacking pack.  The ALICE pack has served me well; it has many pockets to organize my gear.  Recently, I have retired the ALICE pack to my wife's van for my backup gear.  I now use a pack from LA RESCUE designed for USAR applications.  It was quite expensive, but built like a tank.  Two things I do not like about the new pack is the hip belt, which uses a VELCRO and metal buckle to adjust and it does not have as many pockets as the ALICE pack.  I may try to jury rig a new buckle for the hip belt.  For the money, I think the ALICE pack is a good value and should last quite a while.  Pete