I won't vote since I have no experience with either of the packs you mention. However, I do a lot of 5-10 day trips in the western mountains often hauling water and I use a medium-lightweight pack. In the past, I have used a Mountainsmith Phantom, I now use a somewhat larger GoLite Quest for these trips. Both weigh three pounds. IIRC, the Bora 80 is over seven pounds. I recommend that you look at all of the packs in the three pound range and try them on for comfort before you purchase the Bora. I'm sure that one of them will work for your 3-5 day trips. Do this before you consider adding four plus pounds of extra pack.