I just got a Rapid Fire punched up a couple hours ago. The layout is 5 1/2" pin, 3" MB, with a 2 1/4 pin buffer. This put the pin pretty far up and just slightly left of my bridge. The x-hole is in gradient position 3.
I laid out this ball completely different from everything else I have. Most everything else I own has pins in the 4-5" range. Steve Richter discussed with me using weaker pins so I could let the ball do more of the work on the back of the lane. My ball drillers and I discussed this also and they came up with this layout.
I only threw it a couple games, but this ball has a WOW factor. The first thing I noticed is how absolutely straight it goes down the lane. There was very little midlane read. Then at the breakpoint it is like someone kicks it left. The transition is incredibly fast. If you looked up "skid flip" in a dictionary it would show this ball with this layout. I hung quite a few corners due to the ball going so darn long and creating so much angle.
The closest reaction I've ever seen to this was with a Domination, but this ball is a lot cleaner. Based on what I've seen so far, I wouldn't recommend it as a control ball. You probably could lay it out so it is much smoother, and also take the surface down since it comes polished. I just think there are better choices out there. I can't compare it to the Spit Fire because I've never seen one around here.
Don
--------------------
"You cannot change the stripes of a leopard."
~Emmitt Smith