I've never tried Xiom rubbers, but I will be doing so soon. As far as Tenergy 64 it's got great control if you use the right sponge for you. I've tried 1.9 and 2.1. 1.9 is what Joo uses and since he's a defender it's got fantastic control and yet is a good attacking rubber as well. 2.1 is best for someone who still wants a little bit of control on their block, but also likes to attack the service for 2nd ball attacks. Max is where everyone can lost control at, but with the right technique and practice no rubber can't be controlled. Blades are a huge issue as well. The less flexible the blade the less control you will have and thus making Tenergy or any rubber out there have less control. With Tenergy 64 I recommend anything from ALL - to OFF, but nothing above that if you don't want to lose the control of your block.