Both balls are sure to be winners...Rapid Fire rolls very hard and hits like a mutha...continues straight through the pins...Gravity is heavy in the midlane for a pearl but with great backend recovery...both are pretty versatile pieces...
Honestly, though, and I'm sure that mrbowlingnut might appreciate this...I'm more impressed with the Roto Grip Pluto than either the RF or the GS! Now there's a surprise...but I'm not taking anything away from the performance of either Storm ball. I just really liked the roll and length the Pluto gave me -- really quite nice on PBA and Sport patterns; I could just stand right, hit the dry, and watch it carry all day.