I like the REI Co-op Ruckpack 28 Pack. 210-denier ripstop nylon — 2 lb. 11 oz. empty. It’s designed well for organization of small essentials and has two exterior water bottle pockets. The right side opens to a small essentials compartment and the left side opens to access the main compartment which can also be accessed from the top. In the top there is a small compartment for other items you may need without having to search through the bag. A tethered raincover stows in a pocket at the bottom of the bag.

I got mine during one of REI’s sales so it was way less than the sticker price.

If 1700 ci is too small, there’s also a Ruckpack 40. The Ruckpack 28 is uni-sex, for the 40 you’ll need to choose M or W

BTW, there’s no reason to go tactical in a GHB or BOB. I have a couple Maxpedition bags here and besides price, the empty bags are just too heavy. The bags are for walking/hiking, not going into combat.