I currently tote my 50-80-150 lens kit with film, spot meter, prism, etc. In a Hadley Pro bag (a going away gift from co-workers), It is really, really full.....and I'd like to get a 250mm lens. That is too much for my shoulders so on the back it must go. I like shoulder bags because they are so easy to work out of, but I expect I'll use the 250 enough to justify the switch to a backpack. It should also give me some extra room for an extra back as I am thinking about shooting chromes a bit also. Anyway, is anyone out there toting this sort of kit? What is your bag strategy? I looked at Thinktank a bit and they looked promising. Alternatively, I may just take something like a Kelty Redwing and put in the padding, etc, myself