I expected something better since it is supposed to serve professional sports. After some time always in an indoor court, it attracted a lot of dust and no longer has a very good grip. It is also a bit hard.

It is the descendant of the GL7X model so the comparison is only made with this specific ball. The feel in hand is softer and the bounce is better in terms of control. It takes less time of play to settle and I believe (time will tell), that its durability will be greater. It remains a top ball which in this collector's edition is beautiful. It is worth the 111 euros it costs and more. Attention, it is a ball for indoor courts exclusively.