I had a TZ5000 for a year, there were parts I liked, and parts I didn't like.
I didn't like the "turtle" feeling it gave me, it felt like the would bulk out to the side or to the back, giving me the feeling of being a human "turtle". It also made it tough to strap a bow or rifle to it because of this.
I didn't like some of the zippers, the bottom compartment for one specifically. The fabric overlapped (I assume for weather protection) and this made zipping and unzipping that compartment a pain.
The hydration pocket sucked, a half full bladder would slide down or go sideways inside. It also made packing around it in the main compartment tough.
The pack weighs to much empty, I think when I looked last time it weighed something like 8lbs empty, that's too much for me before you even start adding gear.
As far as likes, it was a half decent off the shelf pack. I used it to pack out my bear and mule deer, and pack in camp plenty of times. But had I known then what I know now, I never would have bought one. For a retail price of over $400, there much better options.