I find it interesting that the popular Seek Outside packs have gone back to an external frame. When I started backpacking, all “serious” packs were externals, then in the ’80s internals became popular, mostly displacing the externals. And really, the only reason internals became popular is because in 1984 Colin Fletcher revealed he had replaced his beloved TrailWise external with a Gregory internal. The minions followed suit, and the fledging company made Wayne Gregory a millionaire.
Can’t say either is superior, unless doing technical work. I haven’t bought a new pack in over 8 years, and don’t plan to, so I don’t keep up with what with current offerings. The Seek Outside line looks to be well thought out, and aren’t the typical old Kelty design.
I have a 10 year old McHale LBP for heavier loads, which can expand to about 74L, which is all I need, even on winter snow trips. It works when I need to carry several gallons of water in the desert.
Years ago, when I was a young man, I circumnavigated Joshua Tree NP (then a national monument) without caching water, although I knew where a couple reliable springs were located. On that trip I used an ’80s model Kelty Serac Expedition, with a capacity of something like 115L. I still have and occasionally use this pack.
The frame, hipbelt, and harness on the Seek packs look much more sophisticated and functional. For around $400, it seems to be an attractive package. Of course, that pack will screw up someone’s spreadsheet :-)
I am down to two go-to packs. A smaller McHale Bump, and the LBP. They work for everything I want to do. Actually I am thrilled with both and there is nothing to entice me to look for something else. Although occasionally I will use my Keltys; an early ’70s D4, a larger 70s Serac, and the ’80s Expedition. I mainly use these for nostalgia’s sake. Especially the D4, which I used on a couple 6-month trips in 1971 and 1972. I look at packs like cars. Just need to get from point A t0 point B.
My Kelty D4 weighs 3.5 lbs and the ’70s Serac weighs in at 4.9 lbs. The Seek Outside weighs how much? I would guess, depending on the material and optional pockets it is going to push 4 lbs.
My big McHale, with everything, to include the frame extension and by-pass harness weighs 4.6 lbs. The way I use it most of the time, it weighs around 4.25lbs. Keep in mind the pack material to include shoulder straps, belt, and pockets are made from woven Dyneema and Spectra. So I guess the bottom line of this rambling post, that when you need to carry heavier loads, you need pack where its form follows its function, and you’re gonna need a pack around 4lbs or so.