Several respondents to the backpacks thread mention the Kelty and Gregory BPs. Most users, it appears, do not favor photo-backpacks. I am still not clear about the methods used by these respondents for placing the equipment within the pack and whether the components are individually wrapped and thrown-in randomly with in the pack, or whether they utilize other means for keeping the photo component s in place in an organized fashion. Foam, as used in first generation LowePro did a great job, however I am concern ed that using any foam, other than that used by LowePro could result in outgassi ng of the foam components and contamination of the lens surfaces. I am told tha t polyester foam is what LowePro uses. Would appreciate knowing how you have so lved these problems.