I didn't see the Gorilla a couple weeks ago. My new SMD Starlite is almost half again as big and is less than an ounce more. Just money. I have only bought four packs now in over 35 years of bping. My first one, a Camp Trails external frame pack, I used for over 20 some years, I gave away. I had to replace a lost clevis pin on it, in all the years I used it.