Thanks hikeswithdogs and nivek!
leaning towards the TD. Just not sure which size to pick. I was thinking about the 157W, but there I'm just at the lower limit of the suggested weight range (>150lbs). The 156 or 159 would also be an option. The waist width of the 156 (247mm) is maybe too small for me (boot size US10), whereas the 159 is a little bit too long for my liking (escpecially in the trees and for backcountry kickers). So I thought the 157W would be a good compromise, with a little bit of extra float and still playful lengthwise (maybe I'm wrong). I'm guessing the TD still rides fine switch in pow, since the shape is twin with setback stance.
Another board I was initially considering was the Rome Mod Rocker. But this board is probably less powder-friendly than the Grip, right?