I used this bag for backpacking through Italy for 2 weeks. The size was perfect! I could take everything I wanted to bring with me and then had room for the stuff I bought over there to take home. Once you figure out how to adjust the bag to your body, you are good to go. I am 5'9" and was debating on wither to get the regular or the tall. I got the tall and was happy once I started my trip.
This bag was really easy to use too. I was unpacking and packing it all the time and everything went really smoothly. That had a lot to do with the sleeping bag compartment at the bottom.
I can't wait to do another trip and use this bag again!