Thanks for the update Rongon.
Hmmm...lots one could say or speculate about...
I have tried the Vector a number of times- to me it is an ultimate example of current Alpine versatility: open rockered tip; smooth, round enough flex to perform in powder; wide enough for powder; but torsionally stiff enough to powerfully hold an edge on a dense base. What can I say- those folks at Voile sure know what they are doing! I don't own the Vector because I just don't feel that I have enough vertical in my backyard to justify them- and I don't get out much at this point in my life! If I had a mountain in my backyard- I would already own the Vector.
Don't know anything about the S-125- haven't even had a chance to flex em yet- though I almost bought a pair on clearance...
Fischer is a smart company as well...and the S-125 is not marketed or intended to be an alpine ski- unlike the Vector.
Although to assume makes an ass out of u and me- I am assuming that the S-125 is meant to be a backcountry Nordic touring ski for VERY deep snow. I have to say that I doubt very much that it was intended to carve.
Regardless- I would expect that you are correct about a more forward mounting position- would put more pressure on your tips.
The flex pattern of the S-125 seems weird to me though- why would they be so stiff if they are intended for deep powder snow? Strange.
The 98 and 112 are stiff enough that some have even suggested that they are "double-cambered"- which they ain't- I actually prefer the extra stiffness of the S-98 over its much softer competitor the Epoch. BUT- this is primarily because i find the Epoch too soft to perform as a xcountry ski. The 98 is stiff enough that it still offers some good ole Nordic kick- but its single camber is still reasonably easy to control.
I can only assume that the stiff flex of the 112 and 125 are intended to offer the same- some Nordic kick with a down-hill single camber- with extra width for flotation.
The thing is- as the snow gets truly deep and soft- the ski flex needs to get softer as well. I find I prefer the flex of the Annum over the S-112- when it comes to skiing in deep, soft fluff.
Perhaps the mistake is that the S-98, S-112, and S-125 don't get progressively softer? The Eon, Epoch and Annum sure do- I just wish the Epoch and Eon were a bit stiffer.
Probably not helping you here at all- forgive me!
I am with Mike- try the S-125 on a XCD tour in some deep fluff!