Just got an '04 8.5 rapid fire. Love it
I considered the rapid fire's after sailing heaps with vando, what impressed me was not only the speed but the wind range of them- often he'd be hanging on when I needed to change down (I was using pryde rx2 race sails). They twist off so well that you can hang on to them for a long time if needed. Also being not as rigid as race sails helps you keep the speed up through the chop. The are light sails, I got an 8.5 as I felt a 9m didnt suit me but after using the rapid fire I would definately consider getting a 9.7m, the handling is excellent and cam rotation is very good.
I am critical of the rapid fire's in 2 areas: the luff material, it should be similar to the vmg's or charge which both use dacron BUT the dacron is more susceptible to damage. Stitching, it is fine but could be improved. IMO the new North Daytona has the best stitching of any freerace sail i've seen but the aerotech films should outlast any monofilm sail so pick your evil. On that the rapid fire is simple to rig due to the pentex film, you can wrinkle it up which you cant do with monofilm unless you want big creases through the film.
Be aware also that under 6m they change from a freeslalom type sail to more of a bump and jump sail.
Summing up:
Wind range

Speed

Bottom end

Handling

Rigging

(it still has cams, and the cam access slits are annoying)
Materials

Build quality