Original Freestyle will be smoother and a tad weaker. I think you may have to drill an original Freestyle significantly weaker to have true separation before resorting to urethane with the Combat Tank.
Outside Motiv you could look at:
Reactive:
Storm Tropical
Columbia Scout Reactive
Ebonite Turbo R
Track Tundra
Brunswick Rhino
Urethane (ish):
Hammer Blue Hammer remake
Hammer Purple Hammer Pearl
Brunswick BTU Pearl
I don't have experience with all of these, but they are in the same ballpark of what you are looking for.
For me, an original Freestyle with about 2.5-inch Pin-PAP would be a nice smooth and weaker reaction.