A friend of mine is looking to get a new ball. He is using a Roto-Grip Top Fuel and loved it.  It was his favorite ball he has had.  Now it just doesn't have the hit it used to have and is pretty much burned up.  Does anyone have suggestions on what other ball would be close to the same?  Doesn't have to be another RG, any brand would be fine as long as it specs out to be as close as possible.  Thanks all!