Ultimately the 17, and I’ve had the Air and Pro as well. I’m a “function over form” and practicality guy. So as much as I appreciated the feel of the Air and the “workhorse” nature of the Pro, I just couldn’t get over the fact that the 17 is more bang for the buck than both for me - where the Air’s primary tangible advantage is its feel (and only a slight advantage at that IMO), and the Pro’s primary tangible advantages are the telephoto and slightly better battery (telephoto is nice, but I don’t need it enough to justify a 35% price increase from the 17).