GoRuck's take on a more traditional-style, top-loading backpack. Available in either 21L or 26L, with a back that's roughly the same as the GR1, down to the laptop sleeve, the M23 definitely shares the GoRuck pedigree. I have not tested this pack, but if you prefer the top loading style of pack this is worth considering.

Packable Bullet Ruck (Ripstop Robic, $65): A GoRuck for when your GoRuck is too big. GoRuck recently launched this handy little stowable version of the Bullet Ruck. The price is great and it looks fabulous, which might explain why it sold out so fast that we've yet to get our hands on one. It looks like a good option for a daypack to haul around stuff without bringing your main bag (walking around town with a GR2 for instance is overkill). The downside here is there's not much padding so you're not going to want to load it up too much. I have a very similar stowable pack from Mystery Ranch and 8 pounds is about the max you can comfortably carry. I'll update this guide once I get a chance to try this one.

Originally named the Echo, the GR0 is essentially a 16L GR1 designed for smaller frames and minimalist EDC (everyday carry). If you're under 5'6" and the smaller GR1 feels too big, this is the pack to get.