I've never seen a Jumbo, so I can't compare it, but my Colossus works great for me. I too wanted the water bottle holder, so I picked up on3 of their add on attachments. Even with a full bottle of water, my G27 w/ spare mag, a Kershaw JYD and Muk on it, plus assorted other odds and ends, it's still very wearable for quick day hikes.