Keep in mind, guys...the type of surface we are skiing on plays a large role in determining the "correct" base bevel. Even when you are standing still talking to someone on soft groomed snow, your edges are likely already under the surface...whether you have a 1.5* or a .5* base. Now imagine when you start skiing. A good skier will easily lay TRENCHES in this type of snow with little to no loss of responsiveness during transition even with a 1.5. That being said, I run a 1/3 on my volkl mantras.
Where you really start to notice base edge is on firm surfaces, when it actually takes some early turn shape and subsequent pressuring to penetrate significantly. For these situations (which are my FAV...can I get that with a little extra ice please??), I go with a variable base bevel on my sl's & gs's. For sl (fis legal racetiger 165 wc) I impart .7 from widest point near the tip down about 5cm's to the start of the forebody. .5 for forebody to in front of toepiece, .25 underfoot all the way to just past the heel piece, then back up to .5, than finishing with a .7 for the last 5 cms. Gives me superior and progressive responsiveness. For gs, I just up the degrees. 1, .7, .5, .7, 1.
You have to be zen to do this....I'm still in shock...
All of my skis are at 0.5 base bevel, the variation comes with my side bevel. My fatter skis are at 2 on the side, my carving skis are at 3. I do tend to get a little more hookiness at the shallower bevel at times, but I make sure to do a 2" detune at tip and tail, which takes care of it for me. I can smear, skid, slarve, or carve without a problem. I guess I'm just used to it. I think if I brought my base bevel to a 1, I would have trouble with the lack of response from my skis.
I checked your profils and you both seem to like trees and bumps like me... Do you prefer to ski all those differents terrains with with your skis tuned like that? Advantages? Disadvantages?