In reply to Stone Muppet:
?????
It's just a different type of shock - coils typically perform better than air across the range of the off-road riding experience, so its not a case of hitting things hard! Air is just not that great as a spring (they are getting better and better - Aaron Gwin just won the Lourdes DH on one!).
Not for weight obsessed XC types though who run tyres at 40 psi, lol.