I have an MR Pintler. I am using it for 1-3 nights out as well as long day hunts where I hope to pack out meat. I have also had/used a kuiu 1850 and eberlestock x1 and x2. I just packed out a whole boned out blacktail plus my lwt camp 6 miles, worked great. I fitted a top lid, adds a bit of space for longer trips. I am very interested in the pop ups, seems the 28 would just barely work for overnight, tough when meat enters the pack out equation along with camp. I would go at least 2000 cu for any overnighting and I personally think that the meat shelf that many of the good hunting packs have is a near must for meat hauling. MR mule might be another idea...