The room where I play has 2 Diamond Pro 9' tables and 18 Gold Crown IV's. After playing on both tables I have noticed that the Gold Crowns are much faster and the Diamonds are much tighter. But I am surprised at the difference in speed rebound off the rails. Also, when kicking off the rails the Diamonds have a "thud" sound and the Gold Crowns are noiseless. I have heard that each table company use different manufacturers to supply their rubber cushions. What are your opinions of one cushion vs the other in playability or longevity? BTW all tables have 860 Simonis cloth.