Yes, if you're looking for a certain profile of performance. But I think anyone here would also recommend buying a sleeve of each of the options you're thinking of and hit them side-by-side out on the golf course. No substitute for finding the truth in the dirt.

Don't underestimate how it feels on the putter too. You may like one in the air, but on the ground it's a totally different story which is not something Trackman would be able to tell you.

You can always use launch monitor data for your decision, purchase a box for your first few rounds and use on-course feedback before locking in large quantities. Remember to use wedge, iron, and driver data and not focus just on driver distance. Titleist does their ball fittings starting at the green and then moving back with driver being the last consideration. Gaining 5 yards on drives but coming into greens too flat with too much roll out will not help your scoring capability. Best wishes. Oh, and for others, the models have changed a lot over the years so do not assume because the ProV1 or ProV1x fit you in past models that it will always be the case. I suggest everyone re-fit when every new generation is released.

In my experience, maybe, but maybe not. You can certainly find the ball that produces the most ideal numbers on Trackman (provided a good hitting surface that doesn't skew the launch and spin too much), but that does not correlate to that ball being the BEST ball for you. Plenty of people, myself included, can hit some better launch numbers with a certain ball, but simply find they play better with another. I'd narrow it to two (maybe three) that fit your ear and numbers on the monitor, but then test them on the course to find what actually works best for your game and the courses you tend to play. Some players like the approach of "head to head" on every shot, while others prefer to play one per round over several rounds to see which they like. Personally I kind of use a hybrid test model which may or may not be practical for all depending on how crowded the course is. The fact is that right now we can fit a driver to ANY ball that will optimize launch conditions, so I hit my current ball off the tee as a "control" and then hit one with that ball and one with the perspective new ball from there through the hole. Whichever method you choose, just make sure it ticks the boxes from a playing perspective, not just chasing numbers on a screen.