Another vote here for the 24-120mm. There is a lot not to like about this lens, and it has been pilloried in many other forums by "experts." It is a bit heavy, extends several inches when zoomed out, and perhaps not the sharpest knife in the Nikon drawer. But, although I have plenty of lenses I've accumulated over the years, from 16 to 500mm, if I travel overseas (at least, when I used to be able to travel overseas), and space/weight it at a premium, the 24-120 is the only lens I take. Why? Because of its versatile range as a "walkaround" lens. In the Jurassic days of film, and when many zooms were of terrible quality, I carried one camera with a fixed 28mm for landscapes and more dramatic perspectives, and a second camera with the fine Nikkor 105mm f2.5. The 105 was, and still is, considered one of the classic portrait lenses that offered superb bokeh and great isolation of smaller subjects. So, I grew to like that focal length. I find 70mm a little short for portraits and for me, just doesn't have enough reach. The 24-120 covers it all except for, obviously, extreme telephoto needs. Most of the lens' shortcomings, which in general I've found to be exaggerated, are easily corrected in post. Can't comment on third-party lenses, I just prefer to stay with Nikon, when budget allows. You should easily be able to find one barely used or even new well within your budget. Just one guy's opinion.