I wouldn't recommend an external frame as the first pack to obtain, because those "special situations" are going to arise sooner or later. I began converting to internal frame rigs when traversing toe and handhold trails in rockly Arizona canyons. Whenever my good old Kelty frame would graze the rock, it would transmit a vey disturbing jolt to my body, often at a very unwelcome time. Frames also hang up much more often in underbrush.<br><br>On the other hand, I have carrried electric generators, chainsaws, and paleontological specimens on frames, and they are the only way to go for these specialized uses. A couple of years ago, I packed a 95 pound mammoth bone FPJ (full plaster jacket) about half a mile across a stream and up out of a canyon. Did I ever make deep footprints! Of course, the best way to deal with these situations is to talk a fellow crew member into carrying the load..right, Chris?<br><br>Over the years, an external frame has gone from mainstay status to something I employ only for special uses. I don't presently own one, because, from where the sun now stands, I will carry no more chainsaws..