I bought the k4 5000 last year at the hunt expo and used it all of last year and up to May this year on a bear hunt. The pack is tremendous for carrying weight. After my bear hunt this past May, I decided to purchase the 7200 bag as it wasn't quite big enough for trips past 6 days for me. I used the 7200 for my elk hunt and loved the extra room it has. Was able to help a buddy of mine pack out his first elk. Alls I can say, it packs heavy loads with ease. Just recently, a couple of my buddy's went back into the Selway for 6 days of mule deer hunting. Packed all my gear with plenty of room to spare as I'm not as experienced as a back country hunter as my buddies. Packed in over 60lbs of weight with no issues. Yes I know I have to get lighter and with time I will. But the overall experience with the k4 is something spectacular in my opinion. Great pack. Thank you exo for putting together a great pack.