I run a 156 2013 Rome Mod Rocker as my go-to deck.
It's a fantastic all-mountain board. It's stiffer than most rocker decks which allows it to eat up most snow conditions. It will only start to get chattery on very, very choppy, hard snow/chunder. It's not a T-Rice or a NS Cobra but will fit the bill for what you need methinks. Its definitely not a soft board. On my personal stiffness scale I'd give it a 6 or 7, 10 being super stiff.
FWIW I can carve with my MR as well as I can on my camber board.
I've never been on a Lib Tech or Reverb Rocker so I can't compare.