I'm going to be buying a pack frame in the next month. I plan on doing some elk and moose hunts over the next 10yrs and primarily deer hunt. This summer I'll be doing some hiking in national parks and will need a frame i can strap a child carrier to when my kids are tired of walking that will be more comfortable than a child carrier. I have been looking mainly at Kifaru, Exo and SG. I'd prefer to only try out 2 of the 3 due to adding up the shipping costs for returns (likely $40-50 per returned pack). Which brands would you recommend i test or should I just take the hit on return shipping and try all of them? Most threads I've read seem to like the exo bags but can these bags be put on a SG frame like they can on a kifaru when I'm ready to add a bag to the frame of my choice? I live in the midwest (IA) so trying the packs at the company headquarters is not feasible. If build makes any difference I'm 6' 195lbs and my kids weigh about 45lbs. I would like the pack to cover weights from 30lbs to 100+. Thanks for any input.