If you were planning on changing your Atomic skis to Rossignol, then I might suggest you switch bindings. Otherwise, consider that an Atomic ski derives as much of its characteristics from its as construction as it does mated to its own binding. How much weight saving are you going to get? 2.80kg (6.6lbs) is the total weight. How much does the Rossi binding of question weigh (web site doesn't give details)?
The reason that Atomic bindings don't have high forward pressure is because the heel and toe are linked by metal band, so the distance remains constant as the ski flexes in both the flexed and extreme camber directions. The toe of the binding is fixed to the ski, and the heel is allowed to glide in a track. As the ski flexes, the ski retains its intended arc for the amount of pressure that is applied.
With normal bindings, the boot hinders the arc, causing a flat spot. The forces acting on the heel of the boot from the heel piece forces the binding backwards in its track to compensate. This puts a lot of forces into the middle of the ski, and when the pressure is released, the ski snaps back. The short mounting area of the Rossignol Axial bindings lessen the effect more than Salomon or Marker. The lateral elasticity is required because the forward pressure is so high. As forces increase to the point where the heel can not absorb anymore, the forces are directed to the toe piece. The much longer wings (compared to Atomic) help retain the boot as the binding twists. Another downside of conventional high forward pressure bindings is that when the ski is flexed reversely (increased camber), the ski can release because the distance between heel and toe is increased. You're going to ask how a ski gets extreme camber, aren't you? Though uncommon at the recreational level, when a ski flexes, it can release with a lot of force, and the result can be a extreme camber. The situation arrises in moguls and when jumping mostly.
Before the popularity of shorter more shaped skis, the average length of ski was 200cm. The approximate area covered by the binding was 25% of the ski's length. As skis get shorter, binding coverage increases to 50% of the ski length. This requires a binding which allows the ski to flex underneath without any hindrance.
These are some truths to consider when making your choice of what bindings you want to put on your skis. It might sound like a sales pitch, and it might be, but is more intended to inform you on why Atomic bindings should be considered.
[ November 19, 2002, 05:06 PM: Message edited by: BetaRacer ]