I used to regularly play, and still have (1) dozen, Titleist Pro V1 X-Outs.
Nothing wrong with the ball except for cosmetic blemishes. Some of them were really funny.
One time I found a ball that had Titleist written on one side with no number. Another time I found one that had Tite.... missing the rest of the printing. These balls were same performance quality as regular Pro V1s.
They cost $22.00 a dozen back when I bought them. Wish I had bought a case given that they don't make them any longer and that Pro V1 is my favorite ball.
Not sure about other X-Out balls. Never played them much to know.