I have a pair of forces and they served me well but I would like to get away from the force base plate. The hard plastic in the heel section feels bad on my heel because the soles of my boots are pretty soft and low profile.
Force has the Stage 2 baseplate, the Atlas has a Stage 3.
They're really similar bindings, I rode the Forces for years, and this is my second season on the Atlas base. The Force is a just a tad bit more responsive than the Force, but let us know how you like the Atlas after you get some days on them!