Use AI to give you some comparisons at least on paper. Put in your driver/shaft info and which balls you are comparing. Gives you some really good data to look at. Of course nothing beats actually trying the balls on course to see how it goes. I think the biggest difference you will see between the TP5x and the Left dash will be how the ball spins on the green especially with wedges. Do you want the ball to drop and stop/spin back or run out a bit? Of course I would recommend Titleist over other brands based on the outstanding quality control and performance.

I've never met this "AI" guy but my guess is he doesn't have much experience on a real golf course.
This is the one time I will guess that the members of this forum will have the best answers.
Balls are relatively cheap. Barring a full on ball fitting, get a sleeve of each you're interested in and play them yourself.

Asking this question on a forum loaded with biased Titleist users, the recommendation will be to try Pro-V1 or Left Dash Pro-V1x.

Not to say that TP5 or TP5x aren’t tour quality balls, but there are limited users using these balls not on TM contract. At any level. Even Tiger plays a different brand ball on contract for TM clubs. There are those that may find these preferable to Pro-V series balls outside of the tours, but again, not many. Whatever suits your game, go for it.