I'm an AT newbie, looking to finish up my equipment choices. I had thought about getting a zpacks food bag, but I'm also considering an "armored outdoor gear ratsack cache food storage bag" from REI. This bag weighs in at 6 oz. instead of 1.4 from zpacks, but it claims to be mice and rodent proof. I've read way too many stories about shelter mice on WB. Your thoughts on these food bags, or any others? Thanks to all