got my new deville swivel mounted sat.--never used anything but an everlast chain link--really like the smoothness of the ball--being able to change out the bag w/o hassle is pretty cool--was happy the holes were in the same location as my everlast--could only find #12 in a woodscrew and didn't want to drill the base so used #10's until i can get some 12's--really like the clacking sound it makes--would be cool if there was an acoustically designed hole opened up over the ball you could control the volume with or some way to increase the noise level(we don't have neighbor issues)--thanks dd