If you are spending most of your time on groomed runs doing some carving, I would consider something other than a profile with rocker in the middle, perhaps traditional camber or camber in the middle.
If you are getting back into it after a hiatus, camber in the middle with rockered tip/tail will be fairly forgiving, yet locked in when carving on groomers due to the camber in the middle.
Any reason you're only looking at Burton and NS? Perhaps look into Rossignol, Jones, and Capita.
For research sake, check out (but not limited to) these models:
Rossignol Krypto (or One)
Jones Mountain Twin