Tapered pistons...up or down?

[c0sie]

Ive just bought some Ghea pistons (thanks Wraggy!) and after reading all the threads about them im still confused to which way around the pistons go...

I have read a thread recently that said that the taper needs to be aiming downways towards the end of the shaft....but surely that would mean that on landing a jump itll pack normally but the rebound will pop the car up quicker than with a standard piston?

Surely running the taper upwards towards the shock cap would mean that landing a jump would allow the car to absorb the jump faster but not pop up so fast on the rebound?

Any clever people fancy clearing my mind??

Thanks