I'm definitely not a tripod expert, but one thing I would look for is the stability of the camera and telephoto lenses when shooting in the portrait orientation.
If you shoot using telephoto lenses, droop and jiggle can be very frustrating. They are also indicate that the tripod is vibration sensitive, which can affect sharpness on long shots.
I had a another tripod that was great when the camera was on top of the ball head (landscape mode), but a pain when I oriented the camera on its side for portrait shots. Due to the weight of the D7000 and 70-200mm f2.8, I constantly had to re-adjust and re-tighten to lock and correctly frame the shot. Sometimes I actually had to support the lens with my hand to raise it up to get the shot I wanted.
Test it in the portrait mode with the your camera and longest lens to make sure the camera doesn't jiggle or droop excessively.
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