Looking for advice on cramming my 20* Slick bag into a Exo 4800. I've seen the kifaru stuff sack but don't know if that's the most efficient shape (10.5x14.5) to fit the exo bag (9x11.5x38). I've tried packing it loose and find it annoying to jam back in whenever I get stuff in and out of the pack. I could attach it externally but worry about the bulk/durability. Anyone find anything better than the kifrau?