Neither one is the upgrade
Start here, because it is the mistake this page exists to prevent. The x in Pro V1x does not mean extra, premium or newer. Both balls sit in Titleist's top tier, both carry the same soft cast urethane cover, and at every retailer we checked they cost the same per dozen. Buying the x because it sounds like the better one is the single most common error in this aisle.
What the letter marks is a preference, and golfers at this level have one. Titleist describes the Pro V1 as the choice for players wanting mid-trajectory flight, very low long game spin and maximum short game spin with a softer feel. It describes the Pro V1x as the choice for players wanting higher-trajectory flight, low long game spin and maximum short game spin with a firmer feel. Same family, two characters.
Both are genuine premium golf balls, and giving either to a golfer who plays premium balls is a good gift. There is no version of this where you have bought the wrong thing - only a version where you have bought the one they are not used to.
What Titleist says actually differs
Three things, all from Titleist's published product descriptions rather than from any testing of ours.
Flight. The Pro V1x flies higher. Titleist attributes this to the dimple pattern - it publishes a 388 tetrahedral design on the Pro V1 and a 348 tetrahedral design on the Pro V1x, and says in as many words that the x has the higher flight of the two because of it.
Feel. The Pro V1 is the softer of the two. Titleist credits a softer gradient core, against the high-gradient dual core in the x. Feel in a golf ball means the sensation through the hands on a short putt or a chip, and it is the most personal characteristic a ball has.
Spin on scoring shots. Titleist says the dual core in the Pro V1x produces slightly more iron and wedge spin than the Pro V1. Note the word slightly - this is a fine-grained difference between two balls at the same tier, not a gap a casual golfer would identify blind.
Everything else in the marketing - speed off the tee, control with irons, greenside control - Titleist claims for both balls in near-identical language. That is a useful signal in itself: where the manufacturer stops distinguishing, the difference has stopped mattering.
Why loyalty decides it, not specs
A golfer who plays premium balls has chosen between these two already, and the choice was either made for them by a fitting or arrived at over a few seasons of noticing which one behaves the way they expect. Hand a Pro V1 player a Pro V1x and they will know on the first chip - not because it is worse, but because the feel and the flight are the two things they have calibrated to.
So the highest-confidence gift here is not the better ball. It is their ball. And finding out requires no golf knowledge at all:
- Look in the ball pocket of their bag - usually the large zip pocket on the side. Loose balls will have the model printed on them, in small type next to the number.
- Look for an empty box in the bottom of the bag, the garage or the car. Golfers keep empty sleeves far longer than they mean to.
- Look at a ball they have already played.The side stamp reads either "Pro V1" or "Pro V1x", and that single character is the entire answer.
If you find a letter, buy that. If you find nothing, the Pro V1 is the default, because Titleist publishes it as the more-played of the two models and because a softer feel is the more forgiving miss when you are guessing - the same logic that makes soft the safe guess in soft vs distance balls.
What about a golfer who is not sure themselves?
Plenty of decent golfers have never consciously chosen between these two. For them the letter genuinely does not matter and either dozen is a fine gift, which is a relief rather than a problem.
There is a more useful question hiding behind this one though: is a premium ball the right gift at all? A dozen of either of these costs several times what a mid-tier dozen costs, and the performance a urethane cover unlocks only shows up for a player who can generate spin. For a golfer who loses four balls a round, premium balls are a lovely gesture that disappears into a pond. Are expensive golf balls worth it is the honest version of that argument, and best golf balls for beginners is where to go if the recipient is newer to the game.
The flip side is the reason this gift works so well for the right person. A dozen premium balls is exactly the thing a committed golfer hesitates to buy at full price for themselves, which makes it one of the few gifts that is both completely safe and genuinely wanted.
Which to buy as a gift
You found an x on their box: buy the Pro V1x. Done.
You found a box with no x: buy the Pro V1. Done.
You found nothing: buy the Pro V1. It is the more-played model, the softer feel is the kinder guess, and a Pro V1x player receiving a dozen Pro V1 will simply play them - these are not balls anyone sets aside.
They are new to golf, or they lose a lot of balls: buy neither, and spend a third of the money on a mid-tier dozen plus something they will keep. The full ball guide ranks the tiers with live prices, and Pro V1 vs Chrome Soft is the comparison to read if the question is really about brand rather than model.