Bruce, just wanted to take the opportunity to wish you a great retirement! While your P3 sounds wonderful, your older Kelty with backer board and various cases works so well for me that I cannot justify replacing it. But for those considering buying "something," I have to throw in a plug for your cascading film holders. I originally avoided buying one simply because I thought it would simply add more weight to my pack, and that my lighter ziplock bags worked well enough. But I eventually gave in, and think it is one of the best purchases I've made; it simply makes the photography so much easier, so if anyone is looking for just one photobackpacker item to add to their collection, consider the film holders!