Yes (except for the Heads). We only sell three (non race) hard snow specialty type skis. They are the other three you mention.
Spitfire: Light, nimble, high energy, very slalomy feel but way more forgiving than a race ski or the burlier Nordies like the Mach series.
Progressor: Despite its snug turn radius, the P-9+ feels more like a GS ski to me. Smooth, very damp, energy is well modulated by the flowflex plate.
4X4: Feels like a blend between an all mountain ski and a GS ski. Probably the most powerful of the three. Less quick than the other two but more versatile.
Three very very well thought out skis.........