I'm looking for the fastest rubber available. I have a lot of different kinds on order at the moment, and I am very excited. Yesterday I made a Theraband Gold bandset because I still have a lot of it. Over a Chronograph I was getting about 280 feet per second, or 85 meters per second with a taper of 27mm down to 14mm using 9.5 steel. This speed is not bad, but since Theraband gold is being phased out by top shooters and hunters, I'm looking to find rubber that is pure speed with 7/16"-1/2", or 11-13mm steel. Do you guys have recommendations?