Well it will depend more on the conditions. Soft boards can be super fun in powder, but if you don't have some of the better conditions you might want something a little stiffer like your RC.
Check the conditions and forecast. If you're looking like you got lots of pow and want a little bit of a "surfier" ride, grab your Revolver.
Though why don't you just bring both? Most snowboard bags big enough to hold a 159 will fit both if you take the bindings off one. Stack the boards and set all 4 bindings on the top.
That thing I do to escape the world and have fun with my friend