I used mine quite a bit. But only for long day trips. I seem to be one of the few people that like it.I found it to be comfortable. Capable of carrying pretty heavy loads. Works well with a pack shelf to carry jerry cans of water. Check a local Army Navy store and ask if you can try one out in the store. I only ever used the med size. I guess it's a subjective thing as to if you like it or not.