I've spent some time doing laps on the Origin 96 at several demo day events and for Midwest tree sking, the Origin 96 will give you a fun, spunky ride with very little effort. They add gradually more tip and tail rise to their Origin lineup (90, 96, 106, 116) as they go up in width, and the proportions work really well. The 96 would be a great choice for tree skiing in fresh snow in midwest terrain, yet give a nice grip on the groomers when you want it. I found if the Origin 96 was tuned at less than 1 degree base, 2 degree sides and relatively sharp tip to tail , it came alive on hardpack and gave nothing up off-piste. I think you will have a great time with them, and don't be afraid to have your local tuning shop give them a hardpack tune. The rise proportions in the tip and tail will provide a quick and surfy ride in tight situations even if the ski's running surface is sharp tip to tail...you can always detune the tip or tail a little if you want more smeary feel.
The Origins will feel more fun than the Enforcers...less business-like. You will probably find you burn fewer calories riding the Origin 96 around than the Enforcers...giving up some hardpack carving intensity for less-demanding handling, but picking up a quicker, lighter-feeling ski in the Origins. I would pick the Origins over the Enforcers in the trees...no question.
I like the Origin series, and the pricing is a good value!