LordHamster, What size GR1 is that (21 or 26L). I thought about what you said about it's comfort and back pack straps so I thought I try it and ordered a Rucker (20L. They didn't have the 25L on sale. Goruck has a great sale on those this week and I don't need the laptop compartment, which differentiates it from the GR1. Other bags for that).