In my home spot we have GC4's(some are 4.5 and some around 4-1/8), Diamond bb's with LeagueCut(4.75) pockets and one D'mond 9' ProAm with ProCut(4.5) pockets. All the GC's were shimmed to achieve the size so they play pretty tough but 'gaffy'. Once the ball gets in the jaws it falls due to the short self. The 9' Diamond plays every bit as tough due to the shelf depth and the facing angles. If you hit any 'green' going in you jaw it most of the time. The D'mond bb's are beyond easy to play on, even with worn-in 860. The shelf 'might' be tad a deeper than the ProCut 4.5 but in no way are they tougher to pocket balls/play on. Unless you hit it horrible and get all facing you will rarely if ever hang one up on a 4.75 D bb. About a month ago i played a guy some 9b on a D bb and i literally tortured him. Won like 10 out of 12games. After coming off the other tables these were a joke. Everything fell in, even marginal shots that hit the facing. You have to hit it BAD to jaw a ball on a LeagueCut Diamond.