Hi all, any recommendations on a good brand name and size of a liner for a 4000 cu in pack. Like hefty bag or some type of compactor bag. It's time to upgrade from the thinner economy ones I usually use I use at home. Something that might last a month or so. I'm thinking 20 or 30 gallon size would be about right, but I'e never bought one specifically for a pack. Thanks for your thoughts. Mark S