Replying to Deep days ski

Hi everyone,
I'm really stuck on which ski to get. I'm between the following: Atomic Bent'chetler 120, Atomic Backland 117, Salomon QST 118, and Armada Tracer 118 CHX (All in the longest size). I realise 3/4 of those are much more directional and the choice would be easy since I'd like a twin. But my concern is how well the Bent'chetler will perform in (for example) high speed crud. Anyone have an experience with any of these skis? Or has anyone had the Bent'chetler and compared it with one of the other 3? Seeing as the 3 directionals are all from Amer sports, is there even a noticeable difference between them?
If you have other similar suggestions for a deep days bug mountain charger, that's still playfulish... I'd be happy to hear :)
Thanks for any advice,
David