I dont know about the freebirds... but the jibs and the ar6's I do  know about.
either one will give you splendid performance all over the place and are built to last. Pop for days, light, neet lookin. The jib is symmetrical, and you will center mount that, I had ar6's true center and wouldnt go back.
The reality is, all three skis will give you what youre looking for. Seriously.
The best part about all the twin tip innovation over the last ten years is that these skis are built to take a beating and still get you from top to bottom as fast and as hard as you can go.
I appreciate that you are looking at independent brands, kudos.
depending on your height and weight, maybe the freebird just cause it is a little wider (i think).
Happy skiing.