Couple of comments (note I use the TM level 81 … formerly Nike level 81):
1. I agree with above comment that high end balls are wasted on low end clubs. If one is starting out in this game, buying a Titleist (former high end Nikes) is silly
2. First & foremost remember to check durability. My club has chart on our website we copied from another WGT member. But simple rule of thumb. 2.5 durability means 120 shots per ball (putts on green do not count, everything else does). 2.0 means slightly under 100 shots per ball. Factor that in on some of the expensive Callaways and others because they are more expensive than they seem. The old Nike's and new TM's are all 2.5.
3. Get speed one is comfortable with. But ball and club speed interact. So a 3.5 speed ball and 4.0 speed club produce same meter speed as other way around. More than 1 way to get to right speed. Remember that also when upgrading clubs.
4. It took me a long time to figure this one out. More distance might not be more if spin is higher. A 5.0/4.0 distance/spin combo is no longer than a 4.5/3.5 combo. It just stops quicker on green (which is what I personally prefer). The same 5.0/4.0 combo is shorter than 4.5/2.5. But distance is not everything.
Finally, as to another comment above, once you find something you like, stick with it. Changing balls is a serious business because you have to re-map clubs.
If one is TP-TM, I would probably recommend the 30's level Callaways, maybe the Volviks. At Legend, most, but not all, players I know switched up.
And if one is gifted enough on timing one can handle 2.5 speed balls, one can save a lot of money. That list does not include me.
Utlimately, it is what one is comfortable with.