heal drag isnt from the bindings ( unless you set it towards your heal side of the board too far ) or your board was too narrow for your feet
basically its your preference, but here are some bindings i ridden that i liked for riding everything, k2 sweater, k2 formula, union force, union data, burton triad, burton cartels, burton p.1, flux titan ans super titan, forum republics, nitro blackhawk.
but keep in mind that any of these or other bindings you can ride all over mountain its what you like.
boards basically is same, you can ride anything anywhere it all depends on how much flex you like on a board ( base wise you probably want extruded base instead of sintered, its easier to maintain then sintered base )
again its your preference.. look for things you like on gears such as flex, shape, what type of camber..
you probably get more of an idea what you want after looking into things you like on a board.