supersprint?

[PeteJ]

i hear alot of harping on about supersprint.
so i got some Q's
1. power gains?
2. noise?
3. value?
4. quality?
5. who has some sound/vid clips of a supersrpint system!?

cheers! just curious cause they seem to be the only company bar a longlife/powerflow who do a back box that isnt letterbox!