I've played the Kirkland ball for about 6 weeks now, and can say that I am very satisfied with my purchase. I'm not 100% sure that they are exactly equal to the ProV in overall quality but for the price, it can't be beat. I have given a couple of balls to friends to try and they both responded by saying that they like this ball very well and would switch if this ball would be more available in the stores.
This is not a good value because these golf balls sell for $15.00 per dozen but they sell out as soon as they get to Costco so they can be sold for a much higher price due to demand. They are good golf balls good distance with great hold on the greens.
This is a great golf ball. Not quite the amount of bite on the green as a Pro V 1x but the exterior holds up better can get more than one round out of the ball without it looking beat.
The original Kirkland Signature 4 piece ball IS the best ball I have ever played. To bad it was
short lived. Some day it will be gone, thus I do have a few years supply!!!