Conclusion: I just finished up the three dozen yellow Z Star XV's I purchased in 2012, so I picked up another dozen this year on EBAY. Bit disappointed to find the softer, mellower yellow replaced with the brighter yellow that other companies are putting out, i.e. Titleist, Callaway, Pinnacle, etc.
Conclusion: Swing for swing, this ball plays nearly identical to Pro-V1x with extra stopping power and 'softness'. While not as soft as or spinning quite as much as the original ProV, it is high quality. The XV has a very distinct feel with full swings.
Conclusion: I completely agree with your assesment that the Z Star spins a lot on full shots, but much less than ProV1x on half wedges and pitch shots. I found that very strange also. That being said, isn't you chart for "greenside spin" kind of backwards?
Conclusion: i loved this ball for everything but chipping. I could not get over how far this ball rolled out with brand new vokey wedges. It sucks because they are so durable and the yellow ball is impossible to lose, not to mention that it is very cool to see your ball flight in yellow.
Conclusion: this ball is amazing...it does everything i could possibly want. it has the distance, spin, feel, and durability i want in a ball, and usually then some. it has a super thin cover, which when you think about it, is better because all the technology is inside..
Conclusion: If Srixon had the marketing share that Titleist has this ball would probably be one of the top three balls purchased. It is long of the driver and does not have excess spin. I think the performance on full shots with this ball is matched by its performance on half swing shots.
Conclusion: I am so happy I won a sleeve of these at the last gk outing. I am very impressed with the way this ball feels off the driver. Great distance. I have never had so many balls spin back from approach shots from 150 yards and three different courses even.
Conclusion: This yellow Srixon Tour Z Star X is easy to see in the grass and from afar. The best thing about this ball was its durability. I played 12 holes with it and there was not much wear shown on the cover. They are not cheap golf balls but I think they are here to stay yellow or white.